Ken, I think "we live in completely different climates" might be the understatement of the year...
But when I talk about growing in the hoop house, it's totally unheated, just a frame with a plastic covering, but it does warm up more in the spring than the outdoor garden does. And my spare bedroom is probably quite comparable to your pantry!!
Everything seems to be an experiment for me lately... even the things that I thought I knew what I was doing