In food grade plastic bucket or large crock like the ceramic insert to your crock pot grate 1 of the cabbages Add chopped Brussels sprouts and thoroughly mix
Sprinkle 1 to 1 tablespoons salt evenly over the cabbage
Toss in the onions Add the crushed garlic
Grate second cabbage and add it to the crock with the rest of the salt
Using your hands crush the mixture until liquid comes out of the cabbage freely
Place a clean plate on top of the kraut then a clean weight such as clean rocks or a bag of water on top of the plate Cover with a towel and lid; check it after 2 days
Clean off the scum repack and check every three days
In about a week the kraut should be ready Dont worry if the garlic turns blue it happens