sentences:  During the cooking process the beer in the can might steam, which might add moisture in the cavity of the bird, and some theorize that the beer vapor serves to add flavor to the dish.Because the chicken is in an upright position, the fat in the bird drains away and the skin is evenly cooked.Prior to cooking, some of the beer in the can is typically removed, with a partially-full can of beer placed inside the bird's cavity.