Step 3: Cover loosely with lids (do not tighten, just place them on there or cover with a tea towel.
Step 4: Place yogurt in a fermenting chamber. I use a heating pad set to low covered with towels to ferment my yogurt. I’ve also used my Excalibur dehydrator set to 105 degrees to ferment my yogurt, placing the jars in my oven with the oven light on, door closed (do not turn the oven on, just the oven light), and I’ve use the cooler method. The cooler method is placing the jars of milk/yogurt into a cooler and filling with hot tap water, sealing the cooler and letting sit for 24 hours to ferment. Pick a method and let your yogurt ferment for 24 straight hours.