Pour 2 cups of Fairlife chocolate milk into a Ninja Creami pint container.
For the xanthan gum version, add ¼ teaspoon xanthan gum and blend thoroughly. For the cottage cheese version, blend the cottage cheese, chocolate milk, and cocoa powder until smooth.
Place the lid on the pint and freeze on a level surface until solid, ideally 8–24 hours.
Let the frozen pint sit at room temperature for up to 15 minutes before processing if desired.
Place the pint into the Ninja Creami and select the Light Ice Cream setting.
After the first spin, check the texture. It may look snowy or powdery.
Add 2–3 tablespoons of milk if needed. Gently loosen icy areas around the edges before processing again.
Run the Light Ice Cream setting a second time until the mixture becomes smooth and creamy.
Serve immediately or return the pint to the freezer for later