Yes I could if it wasn't 25 degrees outside, ha! I went ahead and did the HP in a crockpot and there were no ill effects. Since I mix the lye outside regardless of temp, there weren't any noticeable fumes coming from it when I brought it in. The cook stage didn't produce noticeable fumes either. I will need to be careful when I fragrance. So far so good though. Timber is his usual nosy self about what I am doing, but he doesn't seem to be affected by the process.