How to Make Mustard greens pickled
Pickled mustard greens (suan cai) are a staple of Chinese cuisine, where the sharp, peppery greens mellow into tangy, umami-rich pickles. This traditional ferment adds depth to soups, stir-fries, and noodle dishes.
Category: Vegetables · Method: Lactic Acid · Time: 7-14d · Difficulty: 1/5 · Yield: varies · Temp: 18-22°C
History
Pickled mustard greens have been made in China for over 2,000 years. They're essential in Sichuan, Cantonese, and Hakka cuisines. The technique spread throughout Asia, with variations in Vietnam (dua chua) and other countries.
Ingredients
- 2 lbs (900g) Mustard greens — Gai choy or similar variety; use mature heads for best results.
- 3 tbsp (45g) Sea salt — For initial wilting and massaging; ensures a 3-5% total salinity.
- 4 cups (1L) Water — Non-chlorinated; used to create a covering brine if the greens don't release enough liquid.
- 1.5 tbsp (22g) Salt for brine — Only if additional brine is needed; maintain a ratio of 1.5 tbsp salt per quart of water.
- 1 tsp Sugar — Optional; helps kickstart the Lactobacillus in cooler climates.
Equipment
- Large mixing bowl
- Crock or large glass jar
- Fermentation weight or plate
- Clean cloth cover
Instructions
Wilt greens
Wash greens thoroughly and pat dry. Spread in the sun for 4-6 hours or indoors overnight until leaves feel leathery and slightly shriveled. If sun is unavailable, place in a dehydrator at 95°F (35°C) for 1-2 hours or a low-temperature oven (lowest setting with door propped) for 30-45 minutes.
Time: 4-12 hours
Tip: Wilting reduces moisture content, preventing the greens from becoming mushy during the long ferment.
Pack vessel
Pack greens tightly into a sterilized glass jar or fermentation crock. Pour the reserved liquid from the massaging step over the greens. If not fully submerged, add the prepared brine. Place a fermentation weight on top to ensure all vegetable matter is below the liquid line.
Time: 15 min
Tip: Leave at least 1-2 inches of headspace to account for bubbling and expansion.
Ferment
Seal the jar with an airlock lid to maintain an anaerobic environment. If using a standard lid, tighten it fully and 'burp' it daily to release CO2 pressure. Store in a cool, dark place (18-22°C) for 7-14 days.
Time: 7-14 days
Tip: Using an airlock significantly reduces the risk of Kahm yeast or surface mold compared to using a cloth cover.
Fermentation Timeline
- Day 1-3: Initial ferment — Greens darken slightly, brine clouds.
- Day 4-7: Active fermentation — Tangy aroma, bubbling visible.
- Day 7-14: Sour development — Pleasantly sour, peppery notes mellow.
- Day 14-21: Deep ferment — Very sour, complex umami flavor.
Signs of Success & Spoilage
Good signs
- Tangy, appetizing smell
- Olive-green color
- Bubbling brine
- Sour taste
- Tender but not mushy
Warning signs
- Mold growth
- Slimy greens
- Foul or rotten smell
- Brown or black color
- Mushy texture
Troubleshooting
- Too bitter
- Cause: Young greens or short ferment Solution: Use mature greens; ferment longer.
- Slimy
- Cause: Too warm or contamination Solution: Ferment cooler; ensure clean equipment.
- Not sour
- Cause: Too cold Solution: Move to warmer location.
Storage
Refrigerator in brine Keeps 6-12 months. Flavor continues developing slowly in fridge.
Health Benefits
- High vitamin K
- Vitamin C
- Live probiotics
- Calcium
- Folate
- Glucosinolates (cancer-fighting compounds)
Serving Suggestions
- In hot and sour soups
- With braised pork belly
- In noodle soups (pho, ramen)
- Stir-fried with pork
- As condiment with congee
- In dumplings and buns
Related Vegetables Ferments
Other Lactic Acid Ferments
- Kefir — Dairy
- Yogurt — Dairy
- Hot Sauce — Condiment
- Water Kefir — Beverage
- Fermented Radishes — Vegetables
- Fermented Green Beans — Vegetables
- Fermented Okra — Vegetables
- Fermented Asparagus — Vegetables