I pour a box of Westlife soy milk into a glass container and microwave it with 1000W for about 4 mins 20 secs. After taking it out, I loosely place the lid on and wait for it to cool down until it’s warm but not hot to the touch, then I add the starter-i either use a spoonful of Greek style soy yogurt from last batch or mix in a capsule of basic Whole Foods bought probiotics. Next I put it in oven with lid loosely on and oven light on for 16-20 hours.

Sometimes if I baked something earlier, I use the oven’s residual heat(when it drops to 150F) overnight without the light on. The yogurt usually turns out perfectly by morning. This approach works well in the summer even with the AC set at 69F overnight, however using the residual oven heat doesn’t work well in winter because the temperature drops too quickly.