Hey Homebrewers, I've got a question for ya'.
I'm wondering how safe it is to boil the wort in my Erlenmeyer flasks (for a starter). I know the glass has a low coefficient for expansion like Pyrex, but I see a lot of mixed advice online and in person.
Some websites advise against directly heating it at all, and some do. When I asked a brewer/employee at a LHBS he advised me to not use an electric coil stove because it creates cold gaps between the metal coils in the glass, and said heating on a gas stove or electric induction stove would be just fine. Before I heard that, I had actually heated on an electric coil stove and didn't notice any problems. Since looking into this matter I have heated my flask on a gas stove and haven't noticed any problem signs, either. (So I've only boiled wort directly in the flask twice).
I figured I'd ask the brightest minds in the brewing community for guidance, so thanks for your time everyone.