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The Difference Between Natural and Washed Coffee, 72 hour "Anaerobic" Process Coffee 

Roaster Kat
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What's the difference between a Natural and a Washed coffee? What makes coffee anaerobic? How is an Anaerobic Washed different from a regular standard Washed coffee?
During January through March 2021 I lived on a coffee farm in Kona, Hawai'i. Most of my job involved working with the baby plants in the nursery, but I also got to witness the tail end of harvest and learn about coffee processing firsthand.
I made this video to show the answers to the coffee questions above for anyone who hasn't had the opportunity to see it in person.
This video shows the process for:
0:44 Natural coffee with extended 72 hour "Anaerobic" Fermentation
6:37 Washed coffee with extended 72 hour "Anaerobic" Fermentation
8:55 Standard Washed coffee (no extended fermentation)
*NOTE: I often use "coffee beans" and "coffee cherries" interchangeably in this video. Excuse the semantic mistake - you know what I mean. Also FYI, it was the tail end of harvest so the lots are very small and the picking wasn't the most rigorous (ie: some of the cherries we processed were less-than-perfectly-ripe).
Questions, reflections, reactions?
Comment below to let me know what you think!
Video shot and edited at Kona Farm Direct, February 2021

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24 июл 2023

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Комментарии : 156   
@FernandoHernandez-xq1zi
@FernandoHernandez-xq1zi Год назад
This is the most important coffee video on this platform this year. Thank you!
@puddingstar2340
@puddingstar2340 Год назад
Absolutely Correct ✅
@roasterkat
@roasterkat Год назад
❤️‍🔥you’re too kind, my friend. Grinder reviews coming soon😜
@gokhangokalp9915
@gokhangokalp9915 9 дней назад
Wow, amazing content! I'm also a big fan of natural anerobic fermented beans.
@pack.50milkst
@pack.50milkst 11 месяцев назад
So amazing to get to see this
@roasterkat
@roasterkat 10 месяцев назад
Thank you! Maybe some day I can come to Thailand and see it with you :)
@pack.50milkst
@pack.50milkst 10 месяцев назад
@@roasterkat we should definitely do it 🙌
@joconnell
@joconnell 6 месяцев назад
This is a fab vid, thanks so much for the visual explanation!
@roasterkat
@roasterkat 6 месяцев назад
You're so welcome!
@mickymickeyt
@mickymickeyt 9 месяцев назад
This is one of the best videos.
@roasterkat
@roasterkat 9 месяцев назад
Thanks so much! Glad you liked it
@Pilwarhol
@Pilwarhol 9 месяцев назад
This is such an amazing good autodidactic video!!
@roasterkat
@roasterkat 9 месяцев назад
Thanks so much! Glad you enjoyed.
@charles_the_elder
@charles_the_elder Год назад
Wow, great video! I learned a lot, thank you.
@roasterkat
@roasterkat Год назад
Thanks so much :)
@HoonsCoffee
@HoonsCoffee Год назад
what a great video Kat! Thank you!
@roasterkat
@roasterkat Год назад
Thanks so much!
@KS-kp2ci
@KS-kp2ci 6 месяцев назад
Great video thanks guys
@roasterkat
@roasterkat 6 месяцев назад
Glad you enjoyed it!
@charlesyu1225
@charlesyu1225 Год назад
a really nice video for us to learn more knowledge about the coffee! thanks for the effort!
@roasterkat
@roasterkat Год назад
Glad you liked it!
@sajjadisayyedali966
@sajjadisayyedali966 6 месяцев назад
Great, learnt so much today❤
@roasterkat
@roasterkat 6 месяцев назад
Glad it was helpful!
@cloudyview
@cloudyview Год назад
I thought I knew a lot more than I actually did. Thanks for the lesson! Natural anaerobic has been my jam for quite a while 👍
@roasterkat
@roasterkat Год назад
There’s always more to learn! And glad you’re enjoying it.
@dkitur8398
@dkitur8398 3 месяца назад
It was a great new lesson. Which product is most preferred by customers
@erharddinges8855
@erharddinges8855 10 месяцев назад
Pictures tell more, very well made!
@roasterkat
@roasterkat 10 месяцев назад
Thanks so much!
@mansooralsheyoukh9318
@mansooralsheyoukh9318 3 месяца назад
Awesome video!
@roasterkat
@roasterkat 3 месяца назад
Glad you enjoyed it!
@Wings_nut
@Wings_nut Год назад
Great explanation. It's always been one of those "inquiring minds want to know" kind of thing. Thanks, Kat 👍
@roasterkat
@roasterkat Год назад
❤️‍🔥👍🏼
@geoffc376
@geoffc376 9 месяцев назад
Great vid! 💯
@roasterkat
@roasterkat 8 месяцев назад
Thanks! 😃
@SudeepDSouzaJ
@SudeepDSouzaJ Год назад
Awesome video.. Started brewing this year. Your video has given me a lot more information on the different processing methods. Thank You.
@roasterkat
@roasterkat Год назад
Glad it was helpful!
@keithstehling3586
@keithstehling3586 11 месяцев назад
Living in Kona must have been quite the experience. Great video... thanks for sharing
@roasterkat
@roasterkat 11 месяцев назад
It was an experience, that's for sure. Thanks so much, and glad you enjoyed!
@carloangelomarquezdiaz3837
@carloangelomarquezdiaz3837 Год назад
nice information thanks master ❤
@roasterkat
@roasterkat Год назад
🤝
@amielterence
@amielterence 6 месяцев назад
One of the few videos that gives live footage of the processes. So much easier to understand the why's behind the what's> Thank you
@roasterkat
@roasterkat 6 месяцев назад
Glad it was helpful!
@La_La_La3
@La_La_La3 9 месяцев назад
Thanks for the video. I have found that natural anaerobic is my favorite.
@roasterkat
@roasterkat 9 месяцев назад
Yum! What do you love about it?
@La_La_La3
@La_La_La3 9 месяцев назад
@@roasterkat LOL I am not that much of an expert to figure that out (although I wish I am). I just found that all the coffee I like the most from B&W was always processed that way. I recently did the coffee taste test hosted by James Hoffmann and while I did know which coffee was from which roaster, we did not know the coffee's origin or process. In the end B&W one was the clear winner for me and I found out it was natural anaerobic.
@KrishnenduKes
@KrishnenduKes Год назад
Finally found you from Instagram. Nice video. This is pretty much what I experienced when I was at the producers. But on a larger scale.
@roasterkat
@roasterkat Год назад
Glad you found me! Hope you liked the video:)
@KrishnenduKes
@KrishnenduKes Год назад
@@roasterkat Very informative yes. Somehow, your reply did not show up in my notifications. RU-vid is terrible in notifications!
@lalaboid
@lalaboid 2 месяца назад
This was so useful and well-explained! I’ve always wanted to know the difference between the two.
@roasterkat
@roasterkat 2 месяца назад
Glad it was helpful! Thanks so much for watching
@daniell.raharitahiana5727
@daniell.raharitahiana5727 5 месяцев назад
Thanks for the informative video! It's interesting how the term "Anaerobic" can mean very different things in this context. Sure, ultimately it's just fermentation in a low-oxygen environment, but there's quite a difference between, for example, a partially sealed plastic bag and a pressurized tank with a one-way valve to release excess pressure. It'd be interesting to see how different oxygen levels during the fermentation might affect the final product, though I'd imagine it wouldn't be easy to isolate that single variable.
@roasterkat
@roasterkat 4 месяца назад
Interesting questions. Yes there may be a difference between a partially sealed plastic bag and a tank, though the barrels with bubblers you are referencing are not pressurized. The bubblers don’t control pressure - they just release CO2, which is a product of the fermentation. But they are not pressurized. In fact, a sealed plastic bag will build more pressure than a barrel with a bubbler (because the bubbler actually lets pressure go). There’s for sure a difference in fermentations controlled well and those controlled poorly, but I think that’s more about method than materials imho
@joymalalaimayum3694
@joymalalaimayum3694 6 месяцев назад
Thank you
@roasterkat
@roasterkat 6 месяцев назад
You're welcome!
@deadruss7574
@deadruss7574 11 месяцев назад
My first taste of an anaerobic was a washed. When I tried a natural anaerobic sometime afterward, the intensity and pungency took me off guard. I know more factors come into play when it comes to arriving at that final taste in the cup, but I figure your video helped me understand a range of contributing variables between the two processes. Thank you! Hope to see more videos like this surrounding the beans and their environment ❤
@roasterkat
@roasterkat 10 месяцев назад
So glad I could give a little clarity and context to your experience. Thanks for sharing your story! And yes, I have lots more videos from different farms. I just have to get around to editing it someday... :)
@eddiefalcon8316
@eddiefalcon8316 5 месяцев назад
What was the method of preparation for the coffee?
@andrewmurdoch6116
@andrewmurdoch6116 7 месяцев назад
Cool.
@roasterkat
@roasterkat 5 месяцев назад
Thanks much!
@cesarserrano2676
@cesarserrano2676 2 месяца назад
Thanks a lot for this usefull information!! What are the differences among them? Thanks again!
@roasterkat
@roasterkat 2 месяца назад
I explain the differences in the video so you can watch and learn from there. Thanks!
@sokhnacheikhbethiothioune7602
@sokhnacheikhbethiothioune7602 15 дней назад
da ngeen con torop koulen ko deflo niii ? lolen guiss yaak ko! waay wuuu way
@tristanleslaymusic
@tristanleslaymusic 6 месяцев назад
I discovered natural coffee a month ago and it has totally changed my life. I love to see how it's made or at least how you guys make it thanks! I assume you can also make naturals without the extended fermentation right?
@roasterkat
@roasterkat 5 месяцев назад
Nice! Naturals are a fun world to get into. And yea, so you absolutely do naturals without an extended fermentation. Most naturals don’t have a specific controlled fermentation step, as far as I’ve seen. They go from being picked (maybe rinsed off to clean/float off the bad stuff) and then right out to dry.
@pavelgrebnev3868
@pavelgrebnev3868 11 месяцев назад
thanks for the video, it's great that we can literally see the proccesses. one question though. is it enough sugar/carbonhydrates in the bag with unwashed (not pulped) coffee for the yests to make the fermantation go on? isn't the cherry skin a barrier that complicates things for the yeasts? or maybe you add sugar/something sweet?
@roasterkat
@roasterkat 10 месяцев назад
Great question - we didn't add any sugar/sweetness to these fermentations. And yes, the skin adds a barrier to the sugars, but yeast and bacteria are small and multiply very quickly, so they get into where the sugar is without problem. When you pick the coffee cherry from the tree, that opens a little hole - kind of like when you pull a grape from the stem. That's enough of an opening for them to get in and kick fermentation off strong, especially when they're in a bit of water like we added to the bag.
@pavelgrebnev3868
@pavelgrebnev3868 10 месяцев назад
@@roasterkat thanks for the inside! )
@adilchahbiFB
@adilchahbiFB 2 месяца назад
Greetings from Morocco 🌿🇲🇦 ☘️🛎👍
@roasterkat
@roasterkat 2 месяца назад
Hello 👋
@ccavila
@ccavila Год назад
Kat! Thanks for the knowledge. Q: What type of yeast did you guys use? All the best!
@roasterkat
@roasterkat Год назад
I’m not sure which yeast this was. They had a few and would use whichever was most handy.
@jamesc6629
@jamesc6629 3 месяца назад
Great video thank you so much for making this! Does anyone know what type of yeast is being added? Is that just regular baker's yeast?
@roasterkat
@roasterkat 3 месяца назад
Thanks much! I wasn't told what yeast this was, as the person doing these fermentations was experimenting with a few different types. It's not baker's yeast though, it's more likely a strain of brewers or wine yeast.
@jamesc6629
@jamesc6629 2 месяца назад
Thank you!
@charlesyu1225
@charlesyu1225 Год назад
would like to know more about coffee trees planting 😁 !
@roasterkat
@roasterkat Год назад
Okay! I have still have video from my time on the farm. I’ll try and dig it up haha
@toddemery1606
@toddemery1606 3 месяца назад
Learning all the work that goes into coffee makes that specially price tag worth it. (side question: do you participate in Leaderboard coffee?)
@roasterkat
@roasterkat 2 месяца назад
Totally! And yea, I love Leaderboard. It’s a great sensory exercise. You?
@SpencerLupul
@SpencerLupul 2 месяца назад
the footage was really cool. is there a significant difference in energy usage between the different processes?
@roasterkat
@roasterkat Месяц назад
Thanks much! What do you mean by energy usage? Not quite sure what you’re asking.
@SpencerLupul
@SpencerLupul Месяц назад
@@roasterkat maybe it’s not measurable, but in terms of resource needs (electricity, heating, water, etc), go get an idea of the C02 impact of each process?
@GadgetsGearCoffee
@GadgetsGearCoffee 9 месяцев назад
the washed anaerobic fermentation, is it actually a honey washed? as there seems to still have some mucilage on it which would carry some of the fruit's sugars as well to be helpful during the fermentation
@roasterkat
@roasterkat 8 месяцев назад
Good question, and it probably depends on the producer- some might call it honey but we called it washed. It didn’t really have any mucillage left on the parchment as we used heavy water to rinse it away.
@yamicanada
@yamicanada 10 месяцев назад
❤❤❤
@roasterkat
@roasterkat 10 месяцев назад
Thanks for watching!
@mamaharumi
@mamaharumi 4 месяца назад
I hadn't realized how much water is used for coffee production. Is there anything done to reuse or lessen wasted water? Seems like that would be important for many of the countries that produce coffee.
@roasterkat
@roasterkat 4 месяца назад
It depends on which country, but that is for sure a concern, especially as the climate changes. Some producers are going more toward natural and honey coffees, or lightly washed to minimize water. But the water post-fermentation is toxic and must be treated before being reused for anything.
@lukewid
@lukewid Год назад
I always hear about fermentation in terms of hours, are there pre and post brix measurements and a target window for final gravity? I like anaerobic processed coffee but the boozy/bitter easily overwhelms the desired flavors for me lately.
@roasterkat
@roasterkat Год назад
Everyone does it a little differently. When I was studying with Lucia Solis we measured Brix, but only to see trends - not for a definitive numerical value. Though some producers do use predetermined parameters. I don’t know about final gravity. And I’m with you - I’m on a Washed coffee kick right now myself haha
@lukewid
@lukewid Год назад
@@roasterkat Thanks for the response! Do you have any washed coffee recommendations outside of B&W stuff?
@SuperCarlomonte
@SuperCarlomonte 9 дней назад
What kind of yeast do you use?
@DrPhilby
@DrPhilby 11 дней назад
What kind of yeast is it?
@user-uq4xm9oe3n
@user-uq4xm9oe3n 7 месяцев назад
Hi can i ask what yeast did you use? Yeast for baking is good?
@roasterkat
@roasterkat 6 месяцев назад
I didn’t see the package of yeast so I’m not sure. And no, it’s not baking yeast. It was a brewing or wine yeast.
@user-kx1ty6wq4k
@user-kx1ty6wq4k 8 дней назад
What is the name of the lady that the man carries and collects coffee beans in it I want to order it from Amzoum
@zaki-pq1ps
@zaki-pq1ps 10 месяцев назад
is there a reason why they directly place the cherry on the floor instead of laying a tarp?
@roasterkat
@roasterkat 10 месяцев назад
It's a drying patio - the only use for that space is drying coffee. Tarps would be unnecessary!
@johntadros1210
@johntadros1210 11 месяцев назад
Hello Kitty, is it possible for me to ask about added yeast? What type is it and is it ready-made yeast for sweets and baked goods?
@roasterkat
@roasterkat 10 месяцев назад
I didn't see the bag, but I think it was mostly wine-making yeast - not baking yeasts.
@Uncensored-Updates
@Uncensored-Updates 2 месяца назад
What is the use of fermentation because in my country we only sun dry
@roasterkat
@roasterkat 2 месяца назад
Fermentation causes different flavors. It’s okay if you only aun dry - different people like different coffees, and different methods work in different places!
@jakobw135
@jakobw135 8 месяцев назад
What do you call the process where the raw beans are first put into a vat of water where the ones floating to the top are discarded, and the rest are are fermented by some process?
@roasterkat
@roasterkat 8 месяцев назад
That happens in nearly every process - it’s called “floating” and it removes coffees with higher density (the ones that float) out of the mix before the coffee is actually processed.
@jonathanlwowski3893
@jonathanlwowski3893 6 месяцев назад
If you place anything with flavor during the anaerobic fermentation process will the beans take on that flavor?
@roasterkat
@roasterkat 6 месяцев назад
Not necessarily. It’s more complicated than that and producers are just on the front end of figuring out what works and what doesn’t. It’s a whole new world!
@user-rx8ct6fr3u
@user-rx8ct6fr3u 11 месяцев назад
Would you be able to share how much cherry to activated yeast is used
@roasterkat
@roasterkat 10 месяцев назад
To be honest I don't remember, and I don't think we measured the yeast-to-cherry ratio. This was at the very end of harvest so we were just using whatever cherry we had and whatever yeast we had left over. (Though I would recommend farmers measure if they do it themselves to track results!)
@onixtheone
@onixtheone 6 месяцев назад
Is it still anaerobic if oxygen can still get in the bag? I suggest a one way valve and stainless steel containers
@roasterkat
@roasterkat 6 месяцев назад
Fermentation is by definition anaerobic (science) so yes I would say it is still anaerobic.
@yosephalemayehu6890
@yosephalemayehu6890 7 месяцев назад
Call me old school but what us the need for the yeast? Is it simply to expedite the process or is does it have any impact on the quality of output? Here, for washed coffee, fermentation is in tanks with water up to 72 hours. Natural is done over the high beds. No yeast in both methods. Anaerobic, I have to check again, but I dont recall yeast in that as well.
@roasterkat
@roasterkat 7 месяцев назад
Yeast is present in the air, on the ground, on the plants, on you and me! Yeast and bacteria are what drive fermentation. Here, we are using a specific yeast to basically take over the fermentation from any native yeasts and bacteria so we get a more uniform, consistent product. You don’t have to inoculate with commercial yeast, but it helps jump-start the fermentation and ensures that it’s being driven by the yeast/bacteria that you want present (ie: the ones that make the flavors you want). Hope that helps!
@Uncensored-Updates
@Uncensored-Updates 2 месяца назад
Is brazil also doing the same thing?
@roasterkat
@roasterkat 2 месяца назад
Some people, yes
@jakobw135
@jakobw135 6 месяцев назад
Does the HONEY PROCESS begin with the DRY or NATURAL process?
@roasterkat
@roasterkat 5 месяцев назад
I’m not quite sure what you mean by “dry versus natural.” But overall, neither. Honey processing is its own processing method from Start to finish. It gets depulped, but then it’s a process in itself. Does that clarify a little?
@SebastianGomez-mu8bd
@SebastianGomez-mu8bd 11 месяцев назад
What is the profile of coffee washed and with an anaerobic process... it is more fruits what @rosterKat
@roasterkat
@roasterkat 11 месяцев назад
It depends on the coffee - but I'd say generally clean and complex, not necessarily fruity. It's still a washed coffee, so it's not fermenting with the coffee cherry on it, which is the process that creates the fruitier flavors.
@tw-77038
@tw-77038 Год назад
Daily sharing always let me see new things at home and abroad, I wish my friends happy and safe🌮🍵🧃🧉🤟😃🥙🍿
@roasterkat
@roasterkat Год назад
Have a nice day!
@gerassimos.fourlanos
@gerassimos.fourlanos 2 месяца назад
What kind of yeast is used in this process?
@roasterkat
@roasterkat Месяц назад
Many types of yeasts can be used - different farmers/producers will use different kinds. But there are specific yeasts developed for coffee processing that many producers will use.
@anwarsharif7853
@anwarsharif7853 8 месяцев назад
Can you please tell me difference between washed and honey processed
@roasterkat
@roasterkat 7 месяцев назад
Check my YT Shorts - I have a 10second video that explains it🤣
@mamaharumi
@mamaharumi 4 месяца назад
I'm not a fan of naturals or honeys anymore (anaerobic or otherwise). They have a particular taste and feel that I don't like. I much prefer a fruit forward washed. Very cool to see how it's done, though.
@roasterkat
@roasterkat 4 месяца назад
For sure - however as you mentioned the washed are usually worse for the environment. Maybe worth getting yourself to enjoy naturals haha
@philipptouboul
@philipptouboul 4 месяца назад
Isn't the washed Anaerobic more like a honey Anaerobic in this case?
@roasterkat
@roasterkat 4 месяца назад
Not in this case, because we fully wash it after the fermentation.
@StefanusGoana
@StefanusGoana 10 месяцев назад
Whst is the yeast you are using?
@roasterkat
@roasterkat 10 месяцев назад
I wasn’t informed - it was a secret🤫
@StefanusGoana
@StefanusGoana 10 месяцев назад
@@roasterkat haha.. thx
@drnunocsousa
@drnunocsousa 11 месяцев назад
it was 100g of yeast for how much lbs of coffee? thanks
@roasterkat
@roasterkat 11 месяцев назад
We didn't weigh it, but you can see how much is in the bag. Probably around 30-40lbs I would say
@drnunocsousa
@drnunocsousa 11 месяцев назад
@@roasterkat thank you
@Sheeesh66666
@Sheeesh66666 9 месяцев назад
You have to ferment with a lid!!!!! What you call anaerobic us metabollically already quite aerobic and heavy on lactic acids. Also, you should use enzymes.
@roasterkat
@roasterkat 8 месяцев назад
Why do you need a lid when the entire bag is closed from oxygen?
@Sayit9297
@Sayit9297 9 месяцев назад
How does the anaerobic fermentation affect the flavour of the coffee?
@roasterkat
@roasterkat 8 месяцев назад
It usually bumps up the intensity of the flavors, especially acidity
@Sayit9297
@Sayit9297 8 месяцев назад
@@roasterkat does it make the fruity notes punchier?
@onixtheone
@onixtheone 6 месяцев назад
@@Sayit9297if you want fruity punch I recommend high quality Kenyan coffees
@jakobw135
@jakobw135 7 месяцев назад
What is the HONEY PROCESSED coffee about?
@roasterkat
@roasterkat 7 месяцев назад
It’s somewhere between a natural and washed. The skin is removed but some of the fruit (called mucilage) is left on for the drying. Does that help answer your question?
@jakobw135
@jakobw135 7 месяцев назад
@@roasterkat Yes. Thank you for answering the question. Can a NATURAL process precede and be combined with - a HONEY PROCESS?
@Military_stroy
@Military_stroy 7 месяцев назад
I have coffee bean ,fermentation 30 day from indonesia Bondowoso Republic Coffee
@roasterkat
@roasterkat 5 месяцев назад
Very cool. Enjoy!
@Military_stroy
@Military_stroy 5 месяцев назад
Maybe you want buy my coffe bean?
@lotusfarm68
@lotusfarm68 5 месяцев назад
Sale me
@Igor-q3f
@Igor-q3f 8 месяцев назад
That’s a lot of bacteria farts 💨 in those bags.
@roasterkat
@roasterkat 8 месяцев назад
True!
@cleancutguy1892
@cleancutguy1892 8 месяцев назад
I bet that coffee beats the heck of starbucks shitty bitter coffee.
@roasterkat
@roasterkat 7 месяцев назад
I would say so 😜
@ikomangsito2315
@ikomangsito2315 10 месяцев назад
hallo roaster katgreeting from bali im komang from bali i would like to know abaout natural proces becaus im parmerbali kopi my i know your email adres?
@roasterkat
@roasterkat 9 месяцев назад
You can find my email through my Instagram
@user-uq4xm9oe3n
@user-uq4xm9oe3n 7 месяцев назад
Hi can i ask what yeast did you use? Yeast for baking is good?
@roasterkat
@roasterkat 5 месяцев назад
I was never told the exact type of yeast. I think it was something for wine or beer brewing, not baking yeast.
@user-uq4xm9oe3n
@user-uq4xm9oe3n 7 месяцев назад
Hi can i ask what yeast did you use? Yeast for baking is good?
@roasterkat
@roasterkat 5 месяцев назад
I was never told the exact type of yeast. I think it was something for wine or beer brewing, not baking yeast.
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