Food · Fermented foods

Ukokkei-tamago (Silkie Chicken Egg)

うこっけい卵 (Ukokkei-tamago)

Also known as: Ukokkei-tamago, Silkie chicken egg, Black-bone chicken egg, Gallus gallus 'Silkie', 烏骨鶏卵

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At a glance

CategoryFood
Japanese labeling nameうこっけい卵 全卵 生
Common Japanese notationsうこっけい卵, 烏骨鶏卵, ウコッケイタマゴ
OriginSilkie chicken egg (Gallus gallus 'Silkie' breed); the breed is the same as Chinese 'wuji' / black-bone chicken; principal modern Japanese silkie egg producers include various small-scale farms; ultra-premium retail positioning
Typical functionsPremium gift retail — single eggs sold at ¥300-¥800 per egg, Functional/health positioning
Regulatory status in JapanStandard food labeling. **Egg is JAS-mandatory allergen.** Silkie breed disclosure. Not a regulated functional category — health claims require FFC if explicit.

Ukokkei-tamago (うこっけい卵 / 烏骨鶏卵) is silkie chicken egg, ultra-premium specialty egg with retail pricing of ¥300-¥800 per egg. **Egg is JAS-mandatory allergen.**

Classification

Tags below link to other ingredients sharing the same attribute, so you can pivot from one ingredient to its peers.

Used in (typical product categories)

Finished-product categories that commonly include this ingredient in Japanese-market formulations.

  • Premium silkie egg gift retail

What it is

Silkie chicken (Gallus gallus 'Silkie' breed) egg.

Typical uses in Japanese products

Premium gift retail.

Functional/health positioning.

For OEM: ultra-premium gift retail OEM.

Regulatory classification in Japan

Standard food labeling. **Egg is JAS-mandatory allergen.** Silkie disclosure.

Regulatory classification in other markets

EUNiche premium specialty. Egg allergen mandatory.
USANiche premium specialty. Egg allergen mandatory.
ChinaEstablished Chinese wuji egg market.
KoreaNiche specialty positioning.

Example products

Example finished products will be added after verification.

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References

  1. MEXT Standard Tables of Food Composition — うこっけい卵 全卵 生

Last updated: 2026-04-28. Ingredient entries are reviewed at least annually against current regulatory listings.

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