Fermentation sounds fancy but humans have been doing it forever. Salt, vegetables, time. That’s basically it.
Sauerkraut – Start Here
Shred a cabbage. Mix with 2% salt by weight. Massage until liquid releases. Pack into a jar. Submerge under liquid. Wait.
Week one: starts bubbling. Normal. Good actually.
Week two to four: taste it. When it’s sour enough for you, move to the fridge.
That’s fermentation. You just did it.
Kimchi – Same Idea, More Flavor
Napa cabbage, salted and drained. Mix with gochugaru (Korean chili flakes), garlic, ginger, fish sauce, scallions. Pack tight. Ferment 2-5 days at room temp.
The smell is intense. Normal. Keep going.
What’s Actually Happening
Lactobacillus bacteria eat sugars, produce lactic acid. Acid preserves the vegetables and creates that tangy flavor. Salt keeps bad bacteria out while good bacteria work.
It’s controlled rot. Sounds gross. Tastes amazing.
Troubleshooting
White film on top? Usually kahm yeast. Harmless. Skim it off.
Pink or black mold? Throw it out. Start over.
Doesn’t taste sour after 2 weeks? Too cold probably. Move somewhere warmer.
Equipment
A jar. A weight to keep vegetables submerged. That’s technically enough.
Fermentation crocks and airlocks are nice but not required. Don’t let gear stop you from starting.