Gluten refers to the proteins found in wheat endosperm. Some people are gluten-intolerant, but a gluten-free diet is not for everyone.
G is for Gluten, Kansas Wheat
What Is Gluten? What Are Gluten Free And Gluten Containing Foods? - GoToChef
What Is Gluten? Everything Bakers (and Pasta Makers) Need to Know
What is Gluten-Free? - Dinner Tonight
Celiac Disease vs. Gluten Intolerance (Infographic)
What Is Gluten? - My Fearless Kitchen
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Tips for a Gluten-Free Diet
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What is Gluten? It's probably not what you think.
A servers guide to gluten-free customers — Spread Love Not Gluten