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
Eti Soda and by Eti Maden with 26%. Trona ore is extracted by solution mining method. Hot water is injected into the trona ore deposit underground through bore holes drilled, which dissolves trona ore. The trona solution is pumped up and is processed to soda products as soda ash (sodium carbonate, NaCO) and baking soda (sodium bicarbonate, NaHCO). The soda ash is mainly used in the glass production. Products of Eti Soda are exported all over the world, especially to European countries. From 2009 to 2013, the value of soda ash exports to 53 countries reached US$1 billion. The annual production capacity