# What is Grass-Fed Whey?

> Grass-fed whey is whey protein made from the milk of cows that eat mostly grass or forage, though there is no single U.S. federal standard for the dairy...

- **URL**: https://www.best-proteinpowder.com/glossary/grass-fed-whey/
- **Publisher**: [Best Protein Powder](https://www.best-proteinpowder.com/)

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Grass-fed whey is whey protein made from the milk of cows that eat mostly grass or forage, though there is no single U.S. federal standard for the dairy claim.