Please don't laugh...this is probably a very basic question, but I don't know the answer.
I had some
awesome knitted potholders forever, and they are finally wearing through...every time I go to use them, I've forgotten, until the heat from a hot pan seeps through onto my fingers! I got them from a fair that one of my kids had at their school...ironically, my mom's best pair of potholders came from a fair that my sister and I had at our school, too!
So my question is this--now that I know how to knit, I can make my own potholders, but I'm not sure what kind of yarn to use. The yarn (although matted down from lots of use and washings!

) just seems to me to be acrylic, but I'm wondering if it's not something else...will acrylic keep the heat off of my hands? Do I need to put some kind of heat insert in the potholder? Is there a pattern for potholders? What gauge yarn should I use?