Buttermilk is primarily due to lactic acid produced by lactic acid bacteria while fermenting lactose, the primary sugar in milk. As the bacteria produce lactic acid, the pH of the milk decreases and casein, the primary milk protein, precipitates, causing the curdling or clabbering of milk. This process makes buttermilk thicker than plain milk. While both traditional and cultured buttermilk contain lactic acid, traditional buttermilk tends to be less viscous, whereas cultured buttermilk is more viscous. Buttermilk can be drunk straight, and it can also be used in cooking. Soda bread is a bread in which the acid in buttermilk reacts
Cream soda Cream soda Cream soda (also known as creme soda) is a sweet carbonated soft drink. Traditionally flavored with vanilla and raspberry and based on the taste of a classic soda, a wide range of variations can be found worldwide. A recipe for cream soda—written by E. M. Sheldon and published in "Michigan Farmer" in 1852—called for water, cream of tartar (tartaric acid), Epsom salts, sugar, egg, and milk, to be mixed, then heated, and when cool mixed with water and a quarter teaspoonful of baking soda (sodium bicarbonate) to make an effervescent drink. It was suggested as a temperance drink