I found a recipe for homemade sour cream here. Sour cream and diet don't go well together, but I was so intrigued by the idea of making my own that I just had to try it. It couldn't be more simple. I put it together just over 24 hours ago and I already have sour cream. It looks like it, smells like it and tastes like it. I'm very pleased. I'm posting the recipe on my cooking blog. Try it. Even if it's just once. It was fun.