Choc/ Coffee Oatmeal Stout

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Rallan33

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Hey guys,

I’m planning to brew up a Fergs oatmeal stout this weekend, using a wort kit (from Grain & Grape). I wanted to add coffee beans and cacao nibs to the brew. But wasn’t sure how to add them? At what stage and whether they should be added directly into the fermenter?
I’m leaning towards a ‘tea bag’ approach towards the end of fermentation. But I’m a bit concerned about the sterilization of the beans.

I’m brewing a 19L batch, so any recommendations on the amount of coffee/ nibs? And what’s the overall best approach.

Cheers!
 

razz

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There is some good reading in this thread Rallan. I haven't done it myself but now i'm thinking I may do so in the next brew. Looks like post boil or in the keg is the way to go.
 

Rallan33

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There is some good reading in this thread Rallan. I haven't done it myself but now i'm thinking I may do so in the next brew. Looks like post boil or in the keg is the way to go.
Awesome mate. Thanks for the suggestion! I’ll check out the link and see what I can find. Cheers
 

labels

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My suggestion is to cold brew the coffee and add towards the end of fermentation. As for th cocoa nibs they really need to be boiled to extract the most flavour, again add the liqour only with the cold brewed coffee towards the end of fermentation - say about 75% attenuation.
 

Rallan33

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Thanks for the advice. I’ve done a lot of reading and I think that this is the way to go! Cold brew sounds like it will impart the most flavour. The boiling of cacao nibs also sounds like a good idea!

Cheers mate
 

labels

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Thanks for the advice. I’ve done a lot of reading and I think that this is the way to go! Cold brew sounds like it will impart the most flavour. The boiling of cacao nibs also sounds like a good idea!

Cheers mate
It is not just flavour, not cold steeping and adding to the mash, even roasted barley and other very dark grains can add an unwanted astringent bitterness that is easily avoided by cold steeping. As for Cocoa, I don't think that gives up astringency so gently boiling will extract more flavour, or/and use unsweetened cocoa, cocoa nibs can get expensive for what they are.
 

Rallan33

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It is not just flavour, not cold steeping and adding to the mash, even roasted barley and other very dark grains can add an unwanted astringent bitterness that is easily avoided by cold steeping. As for Cocoa, I don't think that gives up astringency so gently boiling will extract more flavour, or/and use unsweetened cocoa, cocoa nibs can get expensive for what they are.
Great point. I'm a huge coffee fanatic - especially filter coffee. So I can understand the importance of finding the right brew for the job and avoiding those unwanted astringent notes.
As for the cacao nibs, I've got some sitting in the cupboard which are still fresh so I'll give them a boil before adding the the fermenter.

In terms of adding the cold brew coffee and cacao brew to the fermenter, would you suggest adding them about 2-3 days prior to the end of fermentation? Maybe add the at around day 11 of fermentation and then cold crash and bottle on day 13-14, for example?

Cheers
 

Rallan33

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My suggestion is to cold brew the coffee and add towards the end of fermentation. As for th cocoa nibs they really need to be boiled to extract the most flavour, again add the liqour only with the cold brewed coffee towards the end of fermentation - say about 75% attenuation.
Have you had any experience in roasting the cacao nibs? Or is boiling the best way to go?
 

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Cocoa nibs have already been roasted, you can try double roasting if you like but don't know what the results are likely to be
 

Rallan33

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Cocoa nibs have already been roasted, you can try double roasting if you like but don't know what the results are likely to be
Thanks mate. I gave them a light roasting and a lot of the aromatics came to life - the whole kitchen smelled like chocolate! I think soaked them in whisky for 24hrs and then put them in the primary.
mill leave them for a week and then bottle. So far it’s tasting great - definitely getting plenty of chocolate notes coming through.
 
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