Alright already, here's the basic recipe I use. It would be better if I added some rice flour but I don't make it that way for a reason I have long since forgotten.
As I said, you can substitute head cabbage for the won bok.
Basic Won Bok Kim Chi
INGREDIENTS
1 (2-pound) won bok (Napa cabbage)
1/2 cup kosher salt
About 12 cups cold water, plus more as needed
8 ounces daikon radish, peeled and cut into 2-inch matchsticks
4 medium scallions, ends trimmed, cut into 1-inch pieces (use all parts)
1/3 cup Korean red pepper powder
1/4 cup fish sauce
1/4 cup peeled and minced fresh ginger (from about a 2-ounce piece)
1 tablespoon minced garlic (from 6 to 8 medium cloves)
2 teaspoons Korean salted shrimp, minced
1 1/2 teaspoons granulated sugar (or one small-medium peeled & grated apple/pear)
INSTRUCTIONS
Cut the cabbage in half lengthwise, then crosswise into 2-inch pieces, discarding the root end. Place in a large bowl, sprinkle with the salt, and toss with your hands until the cabbage is coated. Add enough cold water to just cover (about 12 cups), making sure the cabbage is submerged (it’s OK if a few leaves break the surface). Cover with plastic wrap or a baking sheet and let sit at room temperature at least 12 hours and up to 24 hours.
Place a colander in the sink, drain the cabbage, and rinse with cold water. Gently squeeze out the excess liquid and transfer to a medium bowl; set aside.
Place the remaining ingredients in a large bowl and stir to combine. Add the cabbage and toss with your hands until evenly combined and the cabbage is thoroughly coated with the mixture. Cover and allow to sit on the counter to ferment for 2 to 5 days before refrigerating.