Will pre-heating your thermos help keep your coffee hot? I've always thought so, but you might be surprised. Watch as I show pre-heating vs not pre-heating and what the difference made in temperature after 3 hours in a sealed thermos.
By the way, the thermos I use is Stanley. I've used them my whole life, and I will continue to use them.
Thank you for watching. Take care.
27 янв 2023
