On Guiness, per ounce you get:
12 calories
0g fat
1.1g carb
.1g protein
0 fiber, 0 sugars, 0 cholesterol
3g sodium
1.2g alcohol
SO, per pint (16 oz):
192 cal
1.6g protein
17.6g carb
I think my math is correct.
Have a pint 'O Guiness lads & lassies & forgo the eerie green frothy mix....