Storage & ReheatingThis will keep in the fridge for up to 4 days in an airtight container. Cream-based sauces like this one can split slightly once frozen and thawed, so it's best kept in the fridge rather than the freezer if possible — if you do freeze it, expect a slight change in texture and give it a good stir while reheating. Reheat gently in a pan or the microwave with a splash of milk or cream to loosen the sauce back up.