I've never made German-style sour Kraut, but Kimchi is both easy and good. Use a good quality fish sauce, gochugaru (the Korean-style red pepper), and of course, fresh napa cabbage.
(I have experience with the cabbage. I had one lying around for a while, and figured, "Well if it's starting to get old, why not ferment it?" That was a bad call.)
(I have experience with the cabbage. I had one lying around for a while, and figured, "Well if it's starting to get old, why not ferment it?" That was a bad call.)