Pound cake For instance, baking soda or baking powder may be incorporated to induce leavening during baking, resulting in a less dense pound cake. A cooking oil (typically a vegetable oil) is sometimes substituted for some or all of the butter, which is intended to produce a moister cake. Sour cream pound cake is a popular variation in the United States, which involves the substitution of sour cream for some of the butter, which also is intended to produce a moister cake with a tangy flavor. Some of these variations may drastically change the texture and flavor of the pound cake, but
Butter It is rare in Europe as well. Several "spreadable" butters have been developed. These remain softer at colder temperatures and are therefore easier to use directly out of refrigeration. Some methods modify the makeup of the butter's fat through chemical manipulation of the finished product, some manipulate the cattle's feed, and some incorporate vegetable oil into the butter. "Whipped" butter, another product designed to be more spreadable, is aerated by incorporating nitrogen gas—normal air is not used to avoid oxidation and rancidity. All categories of butter are sold in both salted and unsalted forms. Either granular salt or a strong