Author Topic: Brix and ounces  (Read 416 times)

Offline yso191

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Brix and ounces
« on: April 24, 2020, 02:45:39 AM »
Aargh.  I'm about to bottle an imperial stout.  I want to add natural blueberry syrup at the time I bottle.  I will be bottle conditioning and corking the beer for Christmas giveaways... assuming it tastes good!  So here's the dilemma: The blueberry syrup will unavoidably add part, but not all of the priming sugar, so I will have to add some corn sugar to get the right level of CO2.

The carbonation tool in Beersmith says I will need 3.36 oz. of corn sugar, but I need to subtract from that because of the sugar in blueberry syrup.  I contacted the company (Amoretti) who sent me a specification sheet indicating that the syrup has 68 Brix.  WTH am I supposed to do with that?

Can someone help me out?  My brain is numb trying to figure this out.
Steve
BJCP #D1667

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Offline Bob357

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Re: Brix and ounces
« Reply #1 on: April 24, 2020, 03:56:33 AM »
That would be a specific gravity of 1.337.
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Bob357
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Offline yso191

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Re: Brix and ounces
« Reply #2 on: April 24, 2020, 04:57:09 AM »
That would be a specific gravity of 1.337.

I assume you mean the 68 Brix is SG 1.337.  Math challenged as I am, If I add 6.5 oz. of the Blueberry (which is the flavor threshold I am looking for), how much more corn sugar should I add to get my 4 gallons to 2.4-2.5 vv CO2?
Steve
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“Fallacies do not cease to be fallacies because they become fashions.” ― G.K. Chesterton

Offline HopDen

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Re: Brix and ounces
« Reply #3 on: April 24, 2020, 11:40:37 AM »
Make sure the syrup doesn't have potassium sorbate in the ingredients because that will prohibit the syrup from fermenting. I never have used flavoring syrups but I would check.

Offline tommymorris

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Brix and ounces
« Reply #4 on: April 24, 2020, 11:48:42 AM »
That would be a specific gravity of 1.337.

I assume you mean the 68 Brix is SG 1.337.  Math challenged as I am, If I add 6.5 oz. of the Blueberry (which is the flavor threshold I am looking for), how much more corn sugar should I add to get my 4 gallons to 2.4-2.5 vv CO2?
You have 184 grams syrup at 68% Brix. That is equivalent to 184*0.68 = 125 grams of table sugar. You need 96 grams (3.4 Oz) table sugar to carbonate your 4 gallons 2.4-2.5 vv CO2. So, no corn sugar. You can back off the syrup to 5 Oz to carbonate to your spec. If you choose to use all 6.5 Oz syrup your beer should carbonate to 2.9 vv CO2.

I used this calculator for part of the math. https://www.brewersfriend.com/beer-priming-calculator/

The extra acidity and effervescence from 2.9 vv might be a nice addition to a fruit beer.
« Last Edit: April 24, 2020, 11:51:04 AM by tommymorris »

Offline yso191

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Re: Brix and ounces
« Reply #5 on: April 24, 2020, 03:28:51 PM »
Thank you so much!
Steve
BJCP #D1667

“Fallacies do not cease to be fallacies because they become fashions.” ― G.K. Chesterton

Offline tommymorris

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Re: Brix and ounces
« Reply #6 on: April 24, 2020, 09:29:53 PM »
Thank you so much!
You’re welcome. I hope the beer turns out well.