Quick bread leavening agents include a weak base, such as baking soda (sodium bicarbonate) plus a weak acid, such as cream of tartar, lemon juice, or cultured buttermilk, to create an acid–base reaction that releases carbon dioxide. (Quick bread leavened specifically with baking soda is often called "soda bread".) Baking powder contains both an acid and a base in dry powdered form, and simply needs a liquid medium in which to react. Other alternative leavening agents are egg whites mechanically beaten to form stiff peaks, as in the case of many waffle recipes, or steam, in the case of cream puffs. Nevertheless,
Kazan Soda Elektrik which is the primary source of soda ash. For this, trona ore, laying in average at a depth of under ground, is injected with hot water through bore holes drilled, and the dissolved trona is pumped up in the form of trona solution. The plant has five processing lines. The congeneration facility produces 380 MWe electric power and 400 tons of steam. The annual production capacity of the plant is 2.5 million tons of soda ash (sodium carbonate, NaCO) and 200,000 tons of baking soda (sodium bicarbonate, NaHCO). If all of the production were exported to Europe, it would increase