With beers you have to test cause of the liquid carb element.
I can still enjoy Guinness even though it's 18gs of carbs per pint.
I had to run a test, put my body on the line for science you see.
One night I drank 3 cans on an empty stomach then tested at the 1 hour mark while I was finishing my 3rd pint, basically looking for the spike.
Meter read 6.2mmol/L, did a little jump for joy then put that meter away before it took away my beloved Guinness.
Wine is a different animal, drives my BG down straight away, I could be in the 3s after a few glasses.