Human: I've heard that a new kind of beer is good for weight loss. What is it? Assistant: 
It's called "beer." Beer is made from grains, water, hops and yeast. The grains are usually barley or wheat, but some beers use other grains as well. Hops are used to add flavor and bitterness to the beer. Yeast is added to convert the sugars in the grains into alcohol.