>>OK, the "recipe" for the "Science Fair" test tubes comparing digestion of breastmilk, formula and cows milk is: 2/3 white vinegar and 1/3 milk. You can try different ratios and see what happens.<< I heard about this wonderful example a few years ago, but also wondered about the "recipe". I would want to approximate what happens when milk hits the stomach, and it doesn't seem to me that there is more acid in the stomach than milk in such a ratio! Does anyone have more specific knowledge that can address this? Does the ratio used for this illustration matter, or is it only the principle that matters? -Lisa Marasco, LLLL, IBCLC [log in to unmask]