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.

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Classification

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Common OEM product categories

Finished-product categories where Japanese OEM manufacturers commonly formulate with this ingredient.

  • Pre-cooked frozen senmai retail

Ingredient profile

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

OEM applications

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).

Market reference formulations

Example finished products will be added after verification.

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Alternative ingredients

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Quick answers

What is Ushi-senmai (Beef Third Stomach / Omasum)?
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.
What is the regulatory status of Ushi-senmai (Beef Third Stomach / Omasum) in Japan?
Standard food labeling. **Note: raw senmai (senmai-sashi) consumption regulations apply.** Origin disclosure.
What products typically use Ushi-senmai (Beef Third Stomach / Omasum)?
Pre-cooked frozen senmai retail
Where does Ushi-senmai (Beef Third Stomach / Omasum) come from?
Beef third-stomach (omasum) tripe — distinctive multi-leaf 'thousand-fold' structure giving the name 'senmai' (千枚 = thousand sheets)
What is the INCI / JSCI labeling name for Ushi-senmai (Beef Third Stomach / Omasum)?
JSCI: 牛 副生物 第三胃

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References

  1. 文部科学省 (Ministry of Education, Culture, Sports, Science and Technology) 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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