This simple homemade sauerkraut is filled with probiotics to help balance your gut flora.
Clean your jar well. You can pour hot boiling water if you wish to sanitize it so it will remove any lingering harmful bacteria to prevent mold but it's not necessary. Good hot soapy water is fine and rinsed well.
Do not wash the cabbage. You will need the natural bacteria that is on the leaves to start the fermentation process.
Cut and quarter the cabbage. Remove some of the larger leaves and put to the side, you will need this to cover the sauerkraut in the jar.
Take out the core but slicing it in a "V" at the core with the knife and remove it.
Shred the cabbage using a mandolin at your desired thickness into the large rectangular bowl. Or, thinly slice it with a knife on it's side. You can also use a box grater but that is a bit too shredded in my opinion for sauerkraut so if you don't have a mandolin just use a knife.
Sprinkle the fine pink or sea salt over the cabbage.
Use your hands to massage the salt in. Gently squeeze and turn the cabbage while you massage it. You will start to see it get a bit softer as you break down cellulose fibers from cabbage. Liquid will start to develop, do not discard, this is the brine.
Let the cabbage sit for about 30 minutes before putting it in the jar.
Massage it again before putting it in the jar. One head of cabbage should fit in the jar once broken down a bit. Squeeze it all in there, you can push it in with your hands or wooden spoon (I use gloves when I cook normally).
Top the jar with the large loose cabbage leaves you saved. Tuck it in so there is no air (you need an anaerobic state). Once it sits for a few hours it will develop even more brine and be completely submerged in the brine.
Cover with fine cheesecloth or other thin cloth. Put a rubber band around it and let it sit on the counter for 7-10 days (out of direct sun light or heat). Depending on how the air is in your home will depend how long you will have it out. I have central air so 10 days is perfect for me. The slow fermentation tastes the best. The longer it sits the more tangy it will get so test it and see what you prefer in taste. Also the longer it sits the more beneficial microbes (specifically lactobacillus) there will be.
Once it's fermented to your liking, remove the cheese cloth and cover it with the lid. Store in the refrigerator until ready to eat. This can be stored for months in the refrigerator.