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,
Wheat flour the composition of National Flour was conducted for the period 1946–1950. National Flour was discontinued in 1956 against the recommendations of the MRC as the government considered that the addition of nutritional supplements to refined flour removed the necessity for using National Flour on health grounds. National Flour was also a term for a flour introduced in Kenya by the colonial government which contained 70% wheat flour and 30% maize flour. Wheat flour Wheat flour is a powder made from the grinding of wheat used for human consumption. Wheat varieties are called "soft" or "weak" if gluten content is low,