Before starting, clean your 6 or 8 Quart Instant Pot really well with soap and water, or sterilize it by adding 2 cups of cold water, closing the lid and sealing the vent, and setting it to high pressure for 3 minutes, with a natural release.

Heat milk to 180-200 degrees. Add milk to the instant pot and place the lid on it (it doesn't matter if the vent is sealed or not). Press the "yogurt" button and then press "adjust" until the screen says "BOIL".

When the Instant Pot beeps, the milk is hot and ready. Remove the lid and check the temperature with a thermometer to make sure it has reached 180-200 degreed F.

Allow milk to cool to down to 110°F -115°F degrees F. This will take 1-2 hours if left alone, or speed up the process by placing the pot into a bowl of ice water for about 10-15 minutes. Check often with a thermometer. Spoon off any milk skin that has formed on top.

Add Yogurt Starter. Remove a ladleful of the warm milk into a bowl and whisk the yogurt starter into it. Then pour the mixture into the pot and whisk to combine.

Set Yogurt Timer: Place the inner pot back in the instant pot and secure the lid. Press the "Yogurt" button and adjust until it reads 8:00 to 12:00 hours.

When the time is up, check the yogurt. You will know it's ready when it has thickened and jiggles only slightly, like jello.

Refrigerate. Remove the yogurt to a container or cover the inner instant pot bowl and refrigerate for at least 4 hours or overnight, before serving.

Store in containers in the fridge and enjoy within 10 days.