Once the milk is heated add 4 tablespoons of yogurt with live cultures or a yogurt starter package. We used plain yogurt that was pasteurized (do not use ultra-pasteurized). For future yogurt batches you can use the yogurt you have already made.
Mix the yogurt and milk well and pour into a glass container.
Preheat oven to 200 degrees and turn off as soon as it reaches the temperature. Wrap your yogurt container in a towel and place on a cookie sheet in the oven for at least 8 hours. You may need to preheat the oven a few times during that time to keep the oven warm.
Refrigerate overnight before eating. Add fruit, maple syrup or honey to sweeten and enjoy!
It can also be made in a thermos or crockpot:
- Fill the thermos with boiling water until it gets hot. Pour out the water and fill with milk/yogurt mixture and let it sit for 8 hours.
- Here is a crockpot recipe.