Originally Posted by gtpro
have you guys seen Bud Select "55" yet? Just saw it tonight, its the "lowest calorie beer in the world," although they still pulled off 4%ABV somehow.
That's impossible. Alcohol is about 7 calories per gram of pure ethanol.
At 4% ABV * 12 fl oz = 0.48 fl oz of ethanol.
.48 fl oz to mL = 14.195mL
14.195mL * .789g/mL = ~11.2g
11.2g * 7g/kcal = 78.4 calories from ethanol
55kcal / 7g/kcal = 7.857g
7.857g / .789g/mL = 9.958mL
9.958mL to fl oz = .3367fl oz
.3367 fl oz / 12 fl oz = .028 * 100 = 2.8% ABV if all calories are from alcohol.
What you can take away from this is light beer also means light in alcohol, and big alcohol beers will always be high in calories.