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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Koelsch recipe adjustment according to AA%?
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Old 07-12-2012, 08:40 PM   #1
jumertens
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Default Koelsch recipe adjustment according to AA%?

I just bought US Tettnager with an Alpha Acid of 6.1%. Before I used German Tettnager with an AA of 3.9%. If I adjust the ammount proportional to the AA % will my Koelsch taste the same? The math would be:
3.9%/6.1% * 68g = 43g (used in my 10gal Kolesch recipe)

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Old 07-12-2012, 08:43 PM   #2
TyTanium
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Yes, for bittering
No, for flavor/aroma

I.e., I'd keep your later additions the same, but use less bittering.

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Old 07-12-2012, 08:58 PM   #3
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Yes the Tettnager is only used for bittering (60min boiling) in my recioe..thx for the quick response

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Old 07-13-2012, 12:05 AM   #4
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Understand that US Tettnager is actually a British Fuggles derivative, not a German type hop.

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