Passage: Korean cuisine is largely based on rice, noodles, tofu, vegetables, fish and meats. Traditional Korean meals are noted for the number of side dishes, banchan (반찬), which accompany steam-cooked short-grain rice. Every meal is accompanied by numerous banchan. Kimchi (김치), a fermented, usually spicy vegetable dish is commonly served at every meal and is one of the best known Korean dishes. Korean cuisine usually involves heavy seasoning with sesame oil, doenjang (된장), a type of fermented soybean paste, soy sauce, salt, garlic, ginger, and gochujang (고추장), a hot pepper paste. Other well-known dishes are Bulgogi (불고기), grilled marinated beef, Gimbap (김밥), and Tteokbokki (떡볶이), a spicy snack consisting of rice cake seasoned with gochujang or a spicy chili paste.

Question: what is a kimchi?
a fermented, usually spicy vegetable dish