Every now and then I see a thread about someone trying to put boiling water in a peanut butter jar, only to see it melt & shrink. For anyone who still wants to use that kind of container, I found one that works – marshmallow fluff jar.
I was making fudge today and one of the ingredients was marshmallow fluff. In cleaning out the plastic jar, I found it didn't become soft with hot tap water. So I filled it with water and stuck it in the microwave for 3 minutes. The water was good and boiling when I pulled it out, with no change in stability or size. Hot of course but still sturdy.
I don't know about other brands but the one I used was the mason-jar shaped one with a red lid and light-blue/white label. It didn't seem to have a brand other than Marshmallow Fluff.
