Kimchi is a traditional Korean dish made of seasoned vegetables and salt. Koreans eat it at nearly every meal. It can be fresh, like a salad, or it can be fermented. While the most popular variety is spicy kimchi made of cabbage, there are hundreds of different types of kimchi made of different vegetables, and not all of them spicy. Kimchi is also a main ingredient in many other Korean dishes.
I answer many questions about making kimchi in a kimchi-making FAQ.