検証の仕組み
How Halal Japan verifies food
No black boxes: every verdict is built from the ingredient list, flag by flag, aligned with JAKIM MS1500 guidance. Here is exactly how it works.
How does Halal Japan decide if a product is halal?
Every verdict starts from the product’s full ingredient list, read directly from the Japanese label. Each ingredient is checked against halal criteria aligned with JAKIM MS1500 guidance — the Malaysian standard used widely across Southeast Asia. Ingredients that are animal-derived, alcohol-based, or commonly produced from non-halal sources are flagged, and the combination of flags determines the overall status.
What do Halal, Doubtful, and Haram mean in the app?
Halal means no flagged ingredients were found and common hidden risks were ruled out. Haram means the product contains a clearly prohibited ingredient, such as pork-derived gelatin or added alcohol. Doubtful (mushbooh) means at least one ingredient could come from either a halal or non-halal source — like emulsifiers, shortening, or flavorings — and the source could not be confirmed from the label alone.
Which ingredients get flagged, and why?
The most common flags in Japanese products are: gelatin (ゼラチン), usually pork-derived unless stated otherwise; shortening (ショートニング) and emulsifiers (乳化剤), which can be animal- or plant-derived; mirin (みりん) and other cooking alcohols; lard (ラード); and meat-derived extracts and seasonings. The app shows each flag with a plain-language explanation of the risk.
What is a confidence score?
A verdict is only as strong as the information behind it. The confidence score reflects how completely the ingredient list could be read and how well each ingredient’s source is documented — a clear label with well-known ingredients scores high; partial labels or ambiguous additives lower the score. A low score is a signal to double-check, not a hidden verdict.
Can a verdict change over time?
Yes. Manufacturers reformulate products, and source information improves. When a Doubtful ingredient is confirmed plant-derived — or a manufacturer publishes a halal statement — a verdict can upgrade. The app records what would need to be true for a verdict to change, and verification dates will be shown on this site’s product pages as they launch.
Is Halal Japan a certification body?
No. Halal Japan is a decision aid, not a certifier. Restaurant listings distinguish between formally certified venues and Muslim-friendly ones, and product verdicts are ingredient-based assessments — not certificates. For strict requirements, always look for formal certification, and when in doubt, leave it out.
Last updated: July 10, 2026
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