Mystery ABV on my brew!

I brewed Northern Brewing Smashing Pumpkin. Instead of the 2 rahr my LBS had I think 6 rahr. Used 3# of that and 8# of fresh pumpkin. Broke my hydrometer before I could take OG. Took first reading 10 days later and got 1.050. Had some fermentation issues so added Wyeast #1056 on 9/27 and again on 10/6 FG 1.020. Using brewedbyus calculator I should be around 5.64%. After drinking my first glass I feel a buzz. My wife is already really buzzed on #1. Anyone want to guess what my actual % is?

Slainte!

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19.87%

 

Nah! 19.869%

There is no real telling. You changed the recipe and without an OG anything is just a guess.

If you had an extract kit from Northern Brewer, you used all the ingredients and achieved the proper volumes, you would be real close to what they predicted.

 

I think you're right.:rockin:

 

There is a way.

You need to degass a sample of your beer completely (pouring aggressively between two pint glasses a couple dozen times works well).

You'll also need a refractometer. See if you can borrow one.

http://woodlandbrew.blogspot.com/2013/02/abv-without-og.html?m=1