Glad you asked.
In fact I had to write this out in an email to a friend last week, so a quick copy paste and…
Warm Sauerkraut is something I had to get used to. My husband's family is Bavarian — and they do like their warm Sauerkraut.
Mostly I eat it fresh — or at least straight from the jar… crispy and tangy.
I started making my own as it was difficult to find the unpasteurised version — most commercial ones are pasteurised, and so loads of probiotics have been killed off.
Anyway!
Here's the recipe. Ask any questions.
Sauerkraut
Large 1.5L Clip-top jars — (The ones with a rubber seal and clip — they self regulate and let out excess gas and liquid… also easy to "burp" them by pulling the little rubber tag once in a while the first week of fermentation.)
1.7kg Cabbage
34g Pink Himalayan Salt (How to calculate quantity? See right at the end)
1Tbs Caraway seeds, toasted lightly
1Tbs Fennel seeds, toasted lightly
Reserve a couple large outer leaves. Clean well.
Shred cabbage into a large bowl.
Sprinkle with salt.
Leave to stand 10 minutes.
Massage with hands until lots of liquid and soft(ish).
Add Fennel and Caraway, mix well.
Pack squeezed handfuls into a large clean jar — no need to sterilise, just wash it really clean in hot water, but YMMV.
Press down with fists and keep filling — up to 2 inches from top.
Make sure there is enough of the squeezed briny juices in the jar to cover the vegetables. But leave some headroom.
Place the large cabbage leaves (or a plastic lid cut to size etc) on top of the shredded cabbage… this is to keep any shreds floating up and sitting above the brine — these go mouldy and… well… there you go — bad kraut!
Place a weight — a smaller jar or clean pebbles etc on top of the cabbage “lid” and when you close the jar this will push the cabbage shreds down more… so everything gets nicely compressed.
Place the closed jar on a shallow bowl… there will probably be overflow of liquid escaping.
Leave at room temperature for minimum of 10 days. Taste test until you get the tang you like. I like mine to have fermented at least a month.
Then pack the sauerkraut into smaller (or a large one) jars and keep in fridge…
Another handy tip is, you can add your unpasteurised fermented brine to a jar of shop bought “pasteurised” sauerkraut and leave for a few days. The unpasteurised probiotics get to work and help to resurrect the pasteurised sauerkraut. After all, the reason for making your own is to get unpasteurised kraut… all the good stuff gets killed once it has been pasteurised.
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Salt Calculation
Calculate how much salt to use by weighing both your cabbage mixture and your salt.
Salt is key to preserving, and using the weight method you can use any type of salt you want.
Multiply weight of cabbage by 2% (.02), the recommended salinity for sauerkraut.
For example, the weight of your shredded cabbage is 900 grams.
900 x .02 = 18.00
Add 18 grams of salt.
NOTE: The recommended salinity for sauerkraut actually ranges from 1.5-2.5%.
I use 2.0% because I am bad with numbers; feel free to use 1.5% (x .o15) or 2.5% (x .025) or play around with what works best for the salt you use and your environment.