Food · Fermented foods

Ushi-senmai (Beef Third Stomach / Omasum)

牛 副生物 第三胃 (Ushi-senmai)

Also known as: Ushi-senmai, Beef third stomach, Omasum, 牛 第三胃, センマイ

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At a glance

CategoryFood
Japanese labeling name牛 副生物 第三胃
Common Japanese notationsセンマイ, 牛 第三胃
OriginBeef third-stomach (omasum) tripe — distinctive multi-leaf 'thousand-fold' structure giving the name 'senmai' (千枚 = thousand sheets)
Typical functionsYakiniku 'senmai', Senmai-sashi (raw senmai sashimi — Korean-influenced), Motsu-nabe ingredient
Regulatory status in JapanStandard food labeling. **Note: raw senmai (senmai-sashi) consumption regulations apply.** Origin disclosure.

Ushi-senmai (センマイ / 千枚) is beef third-stomach (omasum) tripe with distinctive multi-leaf structure. Yakiniku and Korean-influenced senmai-sashi (raw sashimi) applications.

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.

  • Pre-cooked frozen senmai retail

What it is

Beef omasum (third stomach) tripe with multi-leaf structure.

Typical uses in Japanese products

Yakiniku senmai.

Senmai-sashi (Korean-influenced).

Motsu-nabe.

For OEM: pre-cooked frozen retail.

Regulatory classification in Japan

Standard food labeling. Raw consumption regulations apply for senmai-sashi.

Regulatory classification in other markets

EUEstablished offal market.
USANiche specialty offal.
ChinaMajor Chinese tripe cuisine.
KoreaMajor Korean cheonyeop tradition (senmai-sashi originated).

Example products

Example finished products will be added after verification.

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Related ingredients

References

  1. MEXT Standard Tables of Food Composition — 牛 副生物 第三胃

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

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