How to Make Salted egg yolks

Salted egg yolks (咸蛋黃) are cured duck egg yolks, a Chinese delicacy prized for their rich, sandy texture and intense savory-briny flavor. While the whole eggs are traditionally cured, the yolks are especially prized, used in mooncakes, rice dumplings, and increasingly as a trendy flavoring for everything from chips to croissants.

Category: Eggs · Method: Lactic Acid · Time: 3-6w · Difficulty: 2/5 · Yield: varies · Temp: 18-22°C

History

Salted eggs originated in China over 1,000 years ago as a preservation method. Duck eggs are preferred for their larger, richer yolks. Different regions developed techniques - some use brine, others coat in salted clay or charcoal paste. The cured yolks became a celebratory ingredient, especially in mooncakes for Mid-Autumn Festival.

Ingredients

  • 12 eggs Fresh duck eggs — Duck eggs are preferred for their higher fat content; chicken eggs can be used but cure faster (approx. 3 weeks).
  • 1.5 - 2 cups Sea salt — Use enough to create a saturated brine. Use the 'floating egg' test: an egg should float with a small circle exposed.

Equipment

  • Large glass jar or container
  • Slotted spoon
  • Baking sheet (for drying yolks)

Instructions

  1. Make saturated brine

    Boil water and gradually add salt, stirring until no more salt will dissolve and crystals remain at the bottom. This ensures a 20-25% concentration necessary for room-temperature safety. Cool completely before adding wine.

    Time: 20 min + cooling

    Tip: A saturated brine is critical to prevent spoilage when curing at room temperature.

  2. Cure

    Seal the jar and store in a cool, dark place (18-22°C). The high salt concentration prevents bacterial growth while osmosis transforms the yolk texture.

    Time: 4-5 weeks

    Tip: Label the jar with the date. If the brine becomes cloudy or develops an off-smell, discard immediately.

Fermentation Timeline

  • Day 1: Brining begins — Eggs submerged in saturated salt brine.
  • Week 2: Early curing — Salt penetrating. Yolks beginning to firm.
  • Week 4: Testing point — Check one egg. Yolk should be orange and firm.
  • Week 5-6: Full cure — Yolks fully cured - firm, orange, intensely savory.

Signs of Success & Spoilage

Good signs

  • Bright orange yolk
  • Firm, sandy texture
  • Salty but not overwhelming
  • Oil beads on surface when cooked
  • Distinct from raw yolk

Warning signs

  • Runny or liquid yolk
  • Off smell
  • Discoloration
  • Mold in brine

Troubleshooting

Yolk still runny
Cause: Under-cured or brine not saturated enough Solution: Return to brine for 1 more week. Ensure the brine was fully saturated.

Storage

In brine until use; separated yolks refrigerated Keeps Months in brine; weeks for separated yolks. Can freeze raw yolks. Cooked yolks keep well.

Health Benefits

  • High protein
  • Rich in vitamins A and D
  • Choline
  • Omega-3s (duck eggs)
  • Minerals
  • Very rich - use in moderation

Serving Suggestions

  • Center of mooncakes
  • In zongzi (rice dumplings)
  • Crumbled over congee
  • Salted egg yolk crab
  • In trendy salted egg chips/croissants
  • Steamed over rice

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