Fermenting Your Harvest: Sauerkraut, Kimchi and Pickles
The oldest, cheapest, easiest way to preserve a vegetable glut, and the best for your gut.
Lacto-fermentation uses the good bacteria already on your vegetables, plus salt, to turn a glut into tangy, probiotic-rich food that keeps for months. It needs no canning gear, no heat, and almost no skill. If you can grate a cabbage and weigh salt, you can ferment.
Sauerkraut: the gateway ferment
- Shred a cabbage finely. Weigh it.
- Add salt at 2% of the cabbage weight (0.7 oz salt per 2.2 lb cabbage). Use plain salt, not iodised.
- Massage and squeeze for 5-10 minutes until it releases a pool of briny liquid.
- Pack tightly into a clean jar so the brine covers the cabbage. Weigh it down so nothing floats above the liquid.
- Cover loosely (gas must escape) and leave at room temperature 1-4 weeks, tasting as you go. Refrigerate when you like the tang.
The only rule that matters
Keep the vegetables under the brine. Submerged, they ferment safely; exposed to air, they can grow mold. A glass weight, a brine-filled bag, or even a cabbage leaf pressed down does the job. A little white film (kahm yeast) on top is harmless, scrape it off; fuzzy colored mold means start again.
Salt ratios for a kilo of vegetables
| Ferment | Salt | Time |
|---|---|---|
| Sauerkraut (dry-salted) | 2% of weight | 1-4 weeks |
| Kimchi | 2-3% | 3-7 days then fridge |
| Brined pickles (whole veg) | 3% brine (1.1 oz/L water) | 1-3 weeks |
| Hot sauce (fermented chili) | 2-3% | 1-2 weeks then blend |
Warm rooms ferment faster, so a kraut may be ready in a week through a Texas summer and take a month in a Minnesota winter. Taste, do not clock-watch.
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