Raisin cake grapes." Some recipes in the United States circa the early 1900s utilized lard as an ingredient, which could be used instead of butter. Boiled raisin cake is a type of raisin cake whereby various ingredients are first boiled, after which the batter is placed in cake pans then baked. It is sometimes prepared with the omission of some standard cake ingredients, such as butter, eggs or milk. Boiled raisin cake may have a moist consistency. The cake dates back to the time of the American Civil War (1861–1865), when it was prepared in frontier areas using the Dutch oven. Basic
Vegetable oil refining Vegetable oil refining Vegetable oil refining is a process to transform vegetable oil into biofuel by hydrocracking or hydrogenation. Hydrocracking breaks big molecules into smaller ones using hydrogen while hydrogenation adds hydrogen to molecules. These methods can be used for production of gasoline, diesel, propane, and other chemical feedstock. Diesel fuel produced from these sources is known as "green diesel" or "renewable diesel". The majority of plant and animal oils are vegetable oils which are triglycerides—suitable for refining. Refinery feedstock includes canola, algae, jatropha, salicornia, palm oil, and tallow. One type of algae, Botryococcus braunii produces a different type of