Add milk and cream to the Instant Pot. Press the yogurt button until the Instant Pot says “boil.” Put the lid on the Instant Pot with the whistle set to “vent.” Wait for the Instant Pot to beep to tell you the milk has started to boil, about 20 minutes.

Remove the lid and take the inner pot out of the Instant Pot, and set it on the counter. Let it cool to about 105-115°F. This will take up to an hour. You can use a thermometer to check the temperature or test with your clean fingers. If the milk is cool enough to touch, it has cooled enough. It won’t cause any issues if it cools too much.

Add the yogurt starter to the milk. Stir or whisk it in. Return the inner pot to the Instant Pot and add the lid with the whistle set to “vent.” Press the yogurt button until it says 8 hours.