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Tuesday, February 9, 2010

Golden Amber Wheat - Review

We took the specific gravity prior to bottling:  1.02, implying that our beer will be 5.2%. Here is the calculation that we use and HERE is the source.

1.05 x (1.06 – 1.02) = 0.042 kg/L. To calculate the percentage of alcohol is elementary from here. 0.042 / 1.02 = 0.041 or 4.1%.
This is the amount of alcohol by weight. The amount of alcohol by volume (the number you see quoted on cans and bottles) is a little larger. To convert one to the other is also easy. Just divide by the density of alcohol, 0.79 kg/L.
Alcohol by volume: 4.1% / 0.79 = 5.2%.

This does coincide with our hydrometer. We are using a "Triple Scale Wine Hydrometer". In addition to the Specific Gravity, it also shows Balling/Brix, and Potential Alcohol by Volume. Our Starting Potential Alcohol by Volume was 8% and our Terminal reading was 2.8. Difference is 5.2%. 

The beer looked a deep golden amber and we're pleased with how it looks. We did do a taste test; we noticed a lot of bitterness from the hops, but we're both fans of that so that's a good thing. There was a great aroma and overall flavor, so naturally we are excited to try it with some bubbles in it. 

One last thing we noticed during bottling, was the amount of, what I call, "sludge" at the bottom of the primary. In fact, there was so much, that we could only bottle 47 beers as opposed to our usual 48. 

We'll come back when we taste the first bottle in a week.

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