So I checked the Cargo Handbook, and here is what it says about Salt in shipping containers. "When stowed in containers a high standard of container preparation is required, ensuring the interior of the container is absolutely dry and clean. It is important the bags are of good quality and not stowed with goods that might emit moisture. As protection for the container, it is recommended that an innerliner is fitted." Apparently they can't just ship it in a container without a liner, because the salt interacts with the metal and causes the container to rust. I am NOT an expert in this area. I just read a World Cargo Handbook. A good portion of the time, the salt is in bags also. But it made sense that they would not ship salt in a metal container without protection.
I read it about pepper recently, too. Same reason given-shared cargo containers. This was on social media, and she said she had a reaction to pepper because of it. I thought it sounded unlikely.
It makes it so tricky when someone says they reacted because I never want to discredit their experience AND there are SO many variables when it comes to reactions to food.
This is interesting,... what about rock salt / sea salt??? i use mediterranean sea salt almost every day. gluten is not an allergy for me. it's a disease DH AND DH you are a celiac aswell.
I have heard that the holiday versions aren't GF because of the line it goes through in the warehouse. so cross contact is HUGE. I know, I've been there!