Hi,
This is another case of 'we're all different' I guess.
I usually have a couple of cans of bitter before dinner, frequently a glass or two of wine with dinner and even sometimes a brandy with cheese to finish off. More than I should have for general health reasons I know, but in terms of my BG counts then my average is 6.4 since last October when I started a low carb diet.
The information I have from the Calorie, Carb and Fat Bible indicates that the carbs in a can of bitter are 2.3, spirits generally 0 and dry wines also 0.
If I drink milk though, my levels always go above my target.
Steve