Sure thing.
First, the sauerkraut:
3 lbs of cabbage, chopped/sliced. I like mine thin but in longer pieces. Think 3/4" to 1 1/2" long.
1.5 to 2 tbsp non-iodized salt. I use sea salt. Kosher salt works great, as well.
1 green apple, peeled and chopped.
1 tbsp caraway seeds (optional, but oh so tasty)
Massage all this together in a large mixing bowl until it's nice and juicy, then press into a jar or ceramic crock. Really massage it in there. I use my fist and a pestle to press it down tight. It's critical that it is packed in so that the brine, formed by the salt drawing out the cabbage's natural water content, covers the cabbage. Any cabbage left above the level of the brine is at risk of going mushy or moldy. Not good, especially if we're brewing beer with this stuff.
Use a plate, quart jar filled with water, or a freezer bag full of salt water to hold everything down and prevent oxygen getting in. Just like with beer, oxygen is the enemy. Put the kraut in a dark place at room temp. No need to expose it to heat. In fact, that will make your kraut funky and soft. We want acidic and crunchy.
I'll probably let mine go 10-14 days. The first experiment went about a week, and that wasn't long enough. The second went about 10 days. Even though that one yielded no yeast, the souring culture was awesome.