Using an Instant Pot, crock pot or dutch oven, heat your milk to 120 degrees for raw yogurt, or 180 for a pasteurized yogurt. *See notes on choosing your heating temp
Immediately cool it down to 110 degrees. Using an ice bath helps speed this process, but you can also just set it on the counter and wait.
Add 3 tablespoons of a previous batch of yogurt, per half gallon of milk. Can substitute a yogurt starter here.
Then set your Instant Pot to the yogurt setting for 8-16 hours (the longer it sets, the tangier it will be). The key here is holding that temp of 110 degrees. My instant pot has a yogurt setting to hold the temp. If using a crock pot or dutch oven, you can place it in the oven with the light on to hold the temp, or place it in a warm spot and wrap it in a thick towel!
Once it's set, strain to your desired consistency using a yogurt strainer or cheesecloth. Then whisk your yogurt to make it smooth and store in the fridge!
Serve with a drizzle of maple syrup or a handful of berries.