While many simple breads are a-OK, containing just four ingredients (flour, yeast, water, and salt) many breads and baked goods are made with whey (a dairy product) or with butter, eggs, or sugar.

The price California farmers get for their milk is tied to sales of butter and cheddar cheese on the Chicago Mercantile Exchange combined with prices for dry whey and dry milk.

This paper gave the formulation through sensory evaluation and spreadability and compared the effect of skim milk powder, soybean protein isolate, whey powder and butter on texture by TPA.