Chili oil jars, although it may also be made from scratch at home. It is usually available by request at Chinese restaurants. Chili oil has various names in China. It is called (chili pepper splashed with oil) in Shaanxi province and 辣油("spicy oil") or 紅油("red oil" ) in Sichuan province. Among those names the most popular one is 辣椒油("chili pepper oil"). In China, chili oil is prepared basically by pouring hot vegetable oil slowly on chili pepper powder or chopped chili pepper. Many other ingredients can be added alongside to enrich flavor such as Chinese black vinegar, minced garlic, dried ginger skin,
Gejang and ground Korean pear, onions, ginger and garlic, as well as whole sesame seeds, and sesame oil. In general, the "gejang" can be eaten a half day after the preparation and consuming the dish within two or three days is best to have its intact spicy and sweet and sour taste. If crabs are first marinated in a boiled and chilled mixture of "eakjeok" (액젓, filtered "jeotgal") and soy sauce before mixing the spicy sauce, the "yangnyeom gejang" can be well marinated with the latter sauce, and can be preserved longer. Types are divided by crab species, region, and cooking