Kimchi is a traditional korean food made from various pickled/fermented vegetables. The most common variety is made from cabbage, so that's what I made for my inaugural kimchi attempt. It was quite easy to make. I haven't tried it yet because it had to sit out at room temperature for 48 hours, and it is now sitting in the fridge for 4 days before it should be eaten.
There are more photos and a link to the recipe on my site!