Disinfect the Instant Pot by rinsing the metal insert with boiling water.
Boil the milk in the Instant Pot. If you plan to add gelatin to your yogurt to thicken it, set aside 1/4 of milk in a glass measuring cup. Pour the remaining milk into the Instant Pot and lock the lid. Select the “yogurt” setting, pressing until your Instant Pot reads “BOIL.”
Meanwhile, if you are using unflavored gelatin to thicken your yogurt, add 1 teaspoon of gelatin to the 1/4 cup of milk you set aside. Don’t stir, allow the gelatin to bloom in the milk.
When the Instant Pot beeps to indicate boiling is complete, measure the temperature of the milk with an instant-read thermometer. If the milk hasn’t reached 180 degrees Fahrenheit, select the sauté setting. Stir occasionally and monitor the milk—it will reach a boil quickly on this setting.
Once your milk has reached 180 degrees, take it off the heat to cool. To speed up the process, you can place the Instant Pot insert into a large bowl with ice.
When the milk cools to 120 degrees, add the gelatin milk mix (if using). Continue to cool until the milk reaches 108 degrees.
When the milk cools to 108 degrees, remove the film on the surface then stir in 1 tablespoon of your yogurt starter.
Place the insert back into the Instant Pot and lock the lid. Select the yogurt setting until the Instant Pot reads “8:00.” Enjoy eight hours of kitty snuggles and play while your cat-friendly yogurt ferments.
Let the yogurt cool to room temperature, divvy into silicone molds, and freeze.
Notes
Store-bought yogurt is necessary as a starter. Once you make your own yogurt, you can save a portion as a starter for your next batch. Making yogurt at home reduces the likelihood of additives and sugars in your cat-friendly frozen yogurt.
Goat milk contains some lactose, which could upset your cat’s stomach. Before giving your cat a whole treat, start with a small taste and monitor for any digestive upset.