The Good Housekeeping Institute has compiled a list of the best low-calorie beers, according to beer experts. The experts suggest that brewers reduce the calories in a beer by reducing the carbohydrates from malt and grains, and reducing the alcohol content. These experts also noted that while choosing a low-carb beer, be mindful of the overall carbohydrate content and added sugars in flavored varieties. The list includes Michelob Ultra Pure Gold, which is one of the fewest with 85 calories per bottle, and Kona Brewing Co. for its fruity brews. The lowest calorie alcoholic beer on the list comes from Bud at 55 calories with less than 2 carbs per can.