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
Plain loaf widely available style of loaf in comparison to the now more common pan loaf. Plain loaf A plain loaf, slices of which are known in Scots as plain breid (pronounced ), is a traditional style of loaf made chiefly in Scotland and Ireland. It has a dark, well-fired crust on the top and bottom of the bread. There is no crust on the sides due to the unbaked loaves being stuck together in batches, baked together then torn into individual loaves afterwards. The term batch loaf is sometimes used. This style of bread does not fit well in most modern