FOOD GUIDANCE · Updated October 17, 2026
Whey: check the cheese-making ingredients
What whey is
Whey is the liquid separated from curd during cheese-making. It can be processed into ingredients such as whey powder or whey protein.
What to ask the manufacturer
Ask which cheese-making process and coagulating enzymes were used for the exact whey ingredient. An unspecified enzyme or rennet description does not establish its animal source or the certification of the finished product.
Compare the evidence
Match the product, manufacturer and market. Check any halal certification and the precise product it covers. For the site’s ingredient criteria, read the cheese and gelatin guides.
Further reading
Johnson and Lucey’s cheese-technology paper was published in 2006. Its publication date describes that research; product-specific evidence is needed for the whey you are buying.
Sources
Sources checked October 17, 2026.
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