Sterilize jars and equipment by pouring boiling water over them, then dry completely. Let them cool to room temperature.
Add finely grated cabbage and 1 ½ teaspoons sea salt to a large bowl. Massage cabbage with clean hands for 10 minutes until it softens and releases water.
Add shredded beet, carrot, ginger, turmeric, and garlic. Massage again for 4-5 minutes until well combined.
Taste and adjust flavor with more salt, ginger, or garlic if needed.
Pack the mixture firmly into sterilized jars, ensuring the liquid covers the vegetables. If liquid is insufficient, continue massaging or rest for 10–15 minutes. Do not dilute with plain water unless properly salted.
Leave about 1 ½ inches of space between the contents and the lid for expansion. Seal with a lid.
Place jars on the counter away from direct sunlight or in a cabinet. Keep the temperature above 65°F (18°C) for proper fermentation.
Open jars daily to release air and press vegetables down to keep them submerged in liquid.
Fermentation can take 24 hours to 2 weeks depending on the temperature. Taste periodically to check tanginess.
Once desired tanginess is achieved, secure the lid and transfer the jars to the fridge. Sauerkraut will keep for 3 to 6 months. Avoid double-dipping when serving to prevent contamination.