We have made a mistake.. please advise.

[Underground]

I did a 'calculus' on my beer last night and it seems to indicate it'll end up at 2.3% (but I was remiss enough to omit a starting gravity reading when I finally finished at 3.30am on 'brew night').

How do you know the ABV if you didn't take a starting gravity reading? You need that to calculate it.

As I said, I used the hopville calculator, and that's what it suggests as the final ABV. It isn't calculated from absolute values, but still.

 

[ScottM]

I did a 'calculus' on my beer last night and it seems to indicate it'll end up at 2.3% (but I was remiss enough to omit a starting gravity reading when I finally finished at 3.30am on 'brew night').

How do you know the ABV if you didn't take a starting gravity reading? You need that to calculate it.

As I said, I used the hopville calculator, and that's what it suggests as the final ABV. It isn't calculated from absolute values, but still.

Can you not add a can of extract to the recipe in hopville in order to see what difference it will make?

 

[rpt]

As I said, I used the hopville calculator, and that's what it suggests as the final ABV. It isn't calculated from absolute values, but still.

Actually, you didn't mention "hopville" until now.

 

[Underground]

Sorry, you're both right and I'm wrong! Tuesdays after a bank holiday take me a while to wake up on....
I did as Scott suggested, and won't be adding a tin of anything as it comes out at 8.5% now. Ill have a play around with weight... Thanks for answering