National Homebrew Club Ireland

Brewing Discussions => All Grain Brewing => Topic started by: benji on October 03, 2015, 10:48:18 PM

Title: Mocha porter
Post by: benji on October 03, 2015, 10:48:18 PM
Looking for advice on a Mocha Porter
"Mocha Porter 20Lt 6.2% EBU 44
5Kg English Maris Otter
240g Chocolate Malt
240g Black Malt
240g Crystal 225 EBC
60g Fuggles @60 min
120g of Costa Rican Coffee added at flameout (20 min steep)
Safale s-04"
I'm looking to add cocoa nibs but I'm not sure how much or when to add, I also have some lactose hanging around and wondering should I add some ?
Title: Re: Mocha porter
Post by: auralabuse on October 04, 2015, 01:52:19 PM
I made a coffee porter before. Also added cocoa into the secondary, it didn't really have the desired effect to be honest. A few lads at the time on here suggested the nibs alright and had had good success. Others soaked them in rum. Sounds nice
Title: Re: Mocha porter
Post by: auralabuse on October 04, 2015, 01:53:26 PM
Btw, it's better to cold brew the coffee and add to secondary. Apparently the beer doesn't turn out as well with hot coffee added
Title: Re: Mocha porter
Post by: Kevin O'Roundwood on October 12, 2015, 10:32:03 PM
Quote from: auralabuse on October 04, 2015, 01:53:26 PM
Btw, it's better to cold brew the coffee and add to secondary. Apparently the beer doesn't turn out as well with hot coffee added

Is cold brewed coffee coffee that was brewed hot and allowed to cool, or is it coffee that was actually infused in cold water?? I've always wondered...
Title: Re: Mocha porter
Post by: auralabuse on October 12, 2015, 10:34:51 PM
It's infused in cold water, cover and leave overnight for best results
Title: Re: Mocha porter
Post by: Kevin O'Roundwood on October 12, 2015, 10:36:46 PM
Thanks auralabuse, never tried it so it seemed like it wouldn't really work but there ya go!

I'll have to try it some time
Title: Re: Mocha porter
Post by: robotmonkey on October 13, 2015, 10:58:34 AM
For the cacao nibs I've found it best to make a tincture.

1. Steep some of the nibs in the vodka for 3-5 days (depending on how much bitterness you want), add a little vanilla if you want a smoother taste. 
2. Strain out the nibs.
3. Pop in a narrow container and freeze for 24 hours.
4. Remove the hardened fat layer
5. Add tincture to beer before bottling (you won't need loads)
Title: Re: Mocha porter
Post by: benji on October 13, 2015, 10:15:16 PM
Thanks for the tips Robot, just wondering where to get the nibs though.
What quality etc.
I'm hoping to brew this Saturday (17th)
Title: Re: Mocha porter
Post by: Bubbles on October 14, 2015, 09:45:47 AM
A health food shop id probably your best bet. Somewhere like Holland & Barrett.
Title: Re: Mocha porter
Post by: robotmonkey on October 14, 2015, 10:48:15 AM
You can get them in Sainsburys. I got a big bag of them from Amazon though.
Title: Re: Mocha porter
Post by: SlugTrap on October 23, 2015, 01:30:06 PM
Quote from: auralabuse on October 12, 2015, 10:34:51 PM
It's infused in cold water, cover and leave overnight for best results

Hot brewed coffee is quite acidic - it can be as low as 4 pH for espresso.
Cold brewed gets around this - pH more around 5.5-6.

Could matter, depending on your volumes...
Title: Re: Mocha porter
Post by: auralabuse on October 23, 2015, 02:36:06 PM
Quote from: SlugTrap on October 23, 2015, 01:30:06 PM
Quote from: auralabuse on October 12, 2015, 10:34:51 PM
It's infused in cold water, cover and leave overnight for best results

Hot brewed coffee is quite acidic - it can be as low as 4 pH for espresso.
Cold brewed gets around this - pH more around 5.5-6.

Could matter, depending on your volumes...
Excellent, I knew cold brewed was desirable but didn't know why
Title: Re: Mocha porter
Post by: irish_goat on October 23, 2015, 02:48:12 PM
Randy Mosher has a bit in Radical Brewing about adding coffee. Pretty sure he recommends cold brewed as well. In saying that, Dungarvan's Coffee and Oatmeal Stout is made with cups of espresso and it's a nice beer, so both methods can definitely work.
Title: Re: Mocha porter
Post by: robotmonkey on October 23, 2015, 03:18:00 PM
I always thought cold brewed coffee was preferred because it extracted less of the oils that affect head retention.
Title: Re: Mocha porter
Post by: beerfly on October 23, 2015, 05:39:50 PM
The main reason for cold brewed coffee is more desirable is it extracts less bitterness and more flavour from the beans. Very similar to dry hopping Vs 60min boil
Title: Re: Mocha porter
Post by: benji on October 23, 2015, 07:44:37 PM
I wonder how much caffeine is extracted with a cold brew
Title: Re: Mocha porter
Post by: dcalnan on October 23, 2015, 07:59:24 PM
It depends on a few factors, higher temperatures more dissolve into solution than at cold temperatures, but with cold brew you tend to have double the amount of coffee to water, and then have a higher concentration of caffeine to water ratio.
Title: Re: Mocha porter
Post by: beerfly on October 23, 2015, 08:17:20 PM
Yea not sure myself but I would be leaning towards the colder the temp the less caffeine extracted.
Grounds from an espresso machine are good fertiliser but caffeine kills plants, so at high temps all the caffeine is extracted. (i know there is a pressure variable)
So I would go with there is some but not a lot + for really good flavour you should go with whole beans and not crush them so less surface area.
Title: Re: Mocha porter
Post by: helmet on October 24, 2015, 04:22:51 PM
Nibs and cold brewed is the way to go then? How much of each for a 1 gallon brew do yis reckon?
Title: Re: Mocha porter
Post by: dcalnan on October 24, 2015, 04:48:47 PM
A figure I've seen for adding nibs is 4oz per 5 gallons, I'm presuming that's american gallons so that works out at around 35g for a uk gallon. As for coffee I'm not sure I've only added ground beans to the fermenter, one thing you could do to avoid caffeine is use decaf beans, but make sure it's swiss water decaf, and not the chemically treated decaf.
Title: Re: Mocha porter
Post by: helmet on October 25, 2015, 10:33:14 AM
Nice one, thanks!
Title: Re: Mocha porter
Post by: dcalnan on October 25, 2015, 06:53:31 PM
So I was doing some reading into this today and discovered a method of using cocoa bean husks in the mash. They use the husks for tea aa well so there's a few methods you could use them, I'm going to contact the chocolate makers I got my nibs from and see if they can source some husks for me.