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
Cuisine of Ceredigion bakery that allows visitors to the Museum to see bakers at work using traditional wooden appliances, mixing dough and using the large brick oven in the traditional way. Pancakes, which are called poncagen (poncagau) or pancosen (pancos) in Ceredigion, are considered to be as traditional in Wales as cawl. Because they could be quickly made on the bakestone over the fire and would often be made for unexpected visitors, as a birthday treat or eaten at high tea. Pancakes still remain popular and are considered best made with buttermilk and bicarbonate of soda, rather than ordinary milk. Most recipe books