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Sour Cream Starter Culture
Product Review (submitted on April 16, 2012):
This is the easiest thing in the world to make, and the results are delicious. I heat up the milk and cool it down, stir in the starter, and let it sit in a thermos insulator for 18 to 24 hours. Thick, rich, tasty sour cream for less than half what I pay for it in the store.