The G-Score is the number of beers I have had in that session.
For example, the first beer I drink will have a G=Score of “1” and the second beer of the session, its G-Score is “2.”
This score is of significance, because the first beer will often be judged more harshly than the third.
Also, beers like India pale ales will typically not taste as good if drunk first, as they will after a couple of beers.
Also, sometimes it’s just fun to see how many beers I had.
As a rule, I will drink all of the beer I “taste.” Otherwise, what’s the point really?