I made some Broccoli kimchi. Used the radish kimchi recipe but substituted 2 bunches of broccoli.
It's only been fermenting for a couple days, think 2 more will do it. I added some water, about 1/2 cup after the first day. It hardly had any juice to it at all, and seemed rather dry, with only a tiny bit of juice at the bottom. Clearly there is little juice in the broccoli crowns.
Otherwise, the flavors are starting to mix quite nicely. I tried some after only one day of fermenting, but unlike radish kimchi.. it really needs time to ferment. The flavor of broccoli is much more pronounced than radishes.
After tasting it today, I think 2 more days will be ready for the fridge.