We bring Jiffy Pop with us all the time when we camp!!! over the fire or over the mini gas grill....the kids love it and it is fun as heck to make. super salty though - but watching dad's blood pressure go up as we are eating it is half the fun.
Oh, and OP, there is no common microwave at the fort that i know of. is there one back at the coffee station in the trading post?!?!? someone here's gotta know that.