Chili oil be used. Other spices may be included such as Sichuan pepper, garlic, or paprika. Commercial preparations may include other kinds of oil, water, dried garlic, soy sauce, and sugar. Recipes targeted to Western cooks also suggest other popular oils such as rapeseed, grapeseed or peanut, and any dried or fresh chili peppers. The solids typically settle to the bottom of the container in which it is stored. When using chili oil, the cook or diner may choose how much of the solids to use; sometimes only the oil is used, without any solids. Chili oil is commercially available in glass
Chili powder may vary from mild to very hot. Hot varieties are called "cheongyang-gochugaru", since they are made from hotter cheongyang chili peppers rather than regular Korean reds. Chili powder blends are composed chiefly of chili peppers and blended with other spices including cumin, onion, garlic powder, and sometimes salt. The chilis are most commonly either red chili peppers or cayenne peppers, which are both of the species "Capsicum annuum". As a result of the various potential additives, the spiciness of any given chili powder is variable. The first commercial blends of chili powder in the U.S. were created by D.C. Pendery