Add dairy during the last 15-30 minutes of slow cooking. Do not simmer or boil, stir in until heated through. Condensed soups may be substituted for milk and can cook for extended times. Milk, cream, and sour cream break down during extended cooking which usually brings the temperature of the food up to the simmer point.
Milk, cream and sour cream:
Add during the last 15 minutes of cooking time.