Spanish cuisine a signal of piety. The arrival of Europeans in America, in 1492, initiated the advent of new culinary elements, such as tomatoes, potatoes, corn, bell peppers, spicy peppers, paprika, vanilla and cocoa or chocolate. Spain is where chocolate was first mixed with sugar to remove its natural bitterness. Other ingredients traveled to the Americas, such as rice, grapes, olives and many types of cereals. Many traditional Spanish dishes such as tortilla de patata (an omelette made with potatoes), would not be possible without the discovery of America. Gazpacho, salmorejo, and pan tumaca are made with tomatoes, which traveled from America
Vegetable oils as alternative energy amount of energy as vegetable oil is low compared to many of the potential replacements for fossil fuels. The list of vegetable oils article discusses which types of vegetable oil are used for fuel and where different types are grown. Vegetable oil is used for transportation in four different ways: The transition can start with biodiesel, vegetable oil refining, and vegetable oil blends, since these technologies do not require the capital outlay of converting an engine to run on vegetable oils. Because it costs to convert vegetable oil into biodiesel it is expected that vegetable oil will always be cheaper