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,
Pullman loaf Pullman loaf The pullman loaf, sometimes called the "sandwich loaf" or "pan bread", is a type of bread made with white flour and baked in a long, narrow, lidded pan. The French term for this style of loaf is "pain de mie", or, less commonly, "pain anglais". In the United States, many popular mass-produced sliced breads are actually pullman loaves; the slice of such breads is frequently square, with four straight crusts. The name "Pullman" was derived from its use in the compact kitchens of the Pullman railway cars. Although the Pullman Company is credited with inventing the lidded baking