The radishes are not large, usually 2 to 4 inches long, and very firm and crispy.
They are mostly used for chonggak kimchi. The Korean word chonggak (총각) means an unmarried young bachelor. In the old days, an unmarried man traditionally had a hairstyle that resembled the greens of this vegetable, which is how it got its name.
New to Korean cooking?
Get started with The Beginner's Guide to Korean Cooking