Remove the outer cabbage leaves. Save one clean leaf to put on top of the jar later.
Shred the cabbage finely with knife or mandoline
Mix cabbage with salt in large bowl
With very clean hands, massage the mixture for 10 minutes until the liquid releases
Add the caraway seeds and juniper berries if they are used.
Pack the cabbage with its released water tightly into clean jar while pressing down firmly to push it down.
Pour remaining liquid over cabbage
Place the leaf you reserved at the beginning on the top of the jar
Add a clean weight to keep cabbage submerged
Cover with cloth and secure with rubber band
Store at room temperature (65-75°F) . Make sure to keep the jar in a dark place away from direct sunlight (inside a cupboard)
Check daily for 1-3 weeks, remove any surface scum and press it down again
Between day 14 and 21 you can transfer to refrigerator when it reaches your desired sourness. Fermentation does not stop in the fridge but it is slowed down.