A pint of Guinness has fewer calories than a pint of your average OJ. A pint of Guinness has 210 calories. A pint of the Tropicana OJ in my fridge has 220 calories.
For all the "heaviness" of Guinness, it has fewer calories than a lot of other of the good beers out there, excluding the watery lights of course, but I wouldn't be caught dead with one of those.
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