This secret recipe was passed on to me by my MIL. She said it came from her mother, who got it from a chef at a country club. The chef, so the story goes, required that she keep the recipe a secret and forbid that it be shared. Since the chef is (by now) long passed, I feel comfortable sharing the recipe. I normally make double batches, it will not last. I tried it with fat-free cream cheese and my husband rejected it. Personally, I thought it worked just fine.