Digestion and Absorption of Protein (continued) Free amino acids absorbed by cotransport with Na + . Dipeptides and tripeptides transported by secondary active transport using a H + gradient to transport them into the cytoplasm. Hydrolyzed into free amino acids and then secreted into the blood. Insert fig.
Substitute an equal amount of sour cream for milk in a recipe. Examine the texture of the sour cream. Adjust the level of shortening or butter in the recipe. Reduce the shortening by 1/2 cup for thick or heavy sour cream or 1/3 cup for thin or light sour cream.
Bake with it. Sour milk is a common ingredient in many pancake, cake and waffle recipes. Once it's cooked, you can't tell that sour milk was used, and it's an easy (and delicious) way to use it instead of having it go to waste. Check out this recipe for lemon Bundt cake or this one for Coca-Cola cake. Note that you can also make your own sour milk by adding vinegar or lemon juice to fresh milk.