title_body: How is gluten-free beer made?
upvoted_answer: These beers are made with non-gluten containing grains such as millet, rice, corn, or buckwheat as opposed to glutenous grains like rye, barley, or wheat. 
  
  As a side note, I recommend your friend give Omission Beer a try. I had it once on accident at a social event. I couldn't tell the difference between it and the real thing until I got home and looked it up online.