Hey, that's how you do it without a heating pad! I make a whole lot of yogurt (I have to make it a gallon at a time because it disappears so fast) but didn't know how you do it off-grid. I just set my giant covered glass bowl on a towel covered heating pad and cover the whole thing with another towel.

I also like straining it to make super thick Greek style yogurt, which is my favorite substitute ingredient now that I'm not buying the expensive stuff anymore. I figure my family's yogurt habit would cost us $12 per week, and that's while the kids are all toddlers.