Cracking cocoa beans using a Brazilian coffee sheller

Clay Gordon
@clay
09/07/11 11:10:00AM
1,680 posts

A ChocolateLife member in Hawaii recently sent me pictures of a Brazilian-made coffee sheller that they've been using in a lab in the University of Hawaii to crack cacao beans for winnowing.

One of the things that makes this device interesting (apart from the fact that it should be inexpensive) is that the gap is adjustable. If so, this could address one of the issues that many people have with the Crankandstein, which is that because the gap is fixed (and narrow) it results in over-cracking the beans and a lot of small particles and dust.

Here are some pictures of the unit:

I am asking any member of TheChocolateLife in Brazil if

a) they know anything about these coffee shellers
b) can try them out on roasted beans and let us know how they work (photos, please!)
c) let us know how much they cost
d) be willing to help (translate) to see if it's worth trying to bring them here to the US.

Thanks,
:: Clay




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clay - http://www.thechocolatelife.com/clay/

updated by @clay: 04/09/15 03:32:57PM
Clay Gordon
@clay
09/07/11 11:27:27AM
1,680 posts

On a related note, John Nanci over at Chocolate Alchemy has finally published a photo for his new winnower - the Aether - that uses a Champion juicer as a bean cracker. I don't have a juicer at the moment, so I was wondering is there are any ChocolateLife members who do have one - and who also have a Crankandstein - who'd like to experiment with using their Champion to crack roasted cocoa beans and compare the difference in the cracking efficiency between the two with us.

In particular, I am interested in knowing about the consistency in sizing and the percentage of very large pieces with shell still attached.




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clay - http://www.thechocolatelife.com/clay/
deborah2
@deborah2
09/07/11 12:50:41PM
25 posts
John did tweek the Champion by cutting out a grid. If no one else gets to it first, I have both a Crankandstein and a Champion and can try the comparison this weekend.
Clay Gordon
@clay
09/07/11 01:03:19PM
1,680 posts

Deborah -

The grid is on the bottom - the output side of the grinding mechanism. My guess is that it's necessary to remove the grid to allow unimpeded flow of the cracked beans. If you don't mind a mess (or can shroud it otherwise - this is a short test), you might be able get away with not using the bottom cover.

Worse comes to worse let me know and I will see about getting a replacement for you.

: Clay




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clay - http://www.thechocolatelife.com/clay/
Brad Churchill
@brad-churchill
09/07/11 05:36:19PM
527 posts
Hmmmm..... Interesting concept....
Potomac Chocolate
@ben-rasmussen
09/09/11 02:15:45PM
191 posts

I tried googling around for more info on these and came across the universal nut sheller. It was originally designed to give people who subsist on peanuts a better way to crack them. Looks pretty easy to build (especially the 2nd revised version at the end of the 'redesigned' video) and could be motorized to really chew through some beans. What do you think?

Original designers:

http://www.thefullbellyproject.org/Products/UniversalNutSheller.aspx

Instructable:

http://www.instructables.com/id/Universal-Nut-Sheller/

Redesigned Universal Nut Sheller

http://www.youtube.com/watch?v=_5vEbZVbZ7Q

Clay Gordon
@clay
09/09/11 02:49:09PM
1,680 posts

Ben:

I am familiar with this project and have, in fact, tried to contact the Full Belly Project about them. My concern is that roasted cocoa beans are a lot more delicate than peanuts (what cracking cocoa beans is closer to is removing the reddish paper shell that sticks to the nut, not the outer shell) and that it would be difficult to gently crack the cocoa without breaking them into very small bits - which is exactly what we're trying to avoid.

:: Clay




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clay - http://www.thechocolatelife.com/clay/
Potomac Chocolate
@ben-rasmussen
09/09/11 02:57:09PM
191 posts
Definitely, but I think that should be controllable by raising or lowering the middle/turning part to increase or decrease the cracking gap. If the gap was set correctly, the beans should just crack and drop.

I'm interested in it because I think the shearing action would help to reduce one of my current headaches, which is nibs holding on to the shell that have to be screened out after winnowing.
Clay Gordon
@clay
09/09/11 03:05:17PM
1,680 posts

Maybe. I am not convinced. Go for it. Make one and let us know.

There is also the potential to embed small pieces of concrete in the bean that you won't be able to remove via winnowing. That may just be a matter of the type of concrete used - perhaps you could use some sort of resin binder.




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clay - http://www.thechocolatelife.com/clay/
Potomac Chocolate
@ben-rasmussen
09/09/11 03:26:25PM
191 posts
I'll add it to my list of projects! :)
Erin
@erin
09/12/11 03:49:04PM
30 posts

Hi Clay, I saw an earlier version of the Aether and the results were much better than the Crankandstein.

Also, I really liked how little dust the earlier version produced. Now that the improvements have been made I am even more interested in it.

Clay Gordon
@clay
09/12/11 03:53:51PM
1,680 posts
I don't disagree. I just hope that the final price, when it's announced, makes sense.


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clay - http://www.thechocolatelife.com/clay/
filipe carniel
@filipe-carniel
06/27/12 12:27:33PM
1 posts

Hello to everyone!

I am from Brazil and I bought one of these Botini coffee crackers for cracking cacao.

It's very cheap, about U$ 50,00 (without freight).

It has an adjustable gap, not much, but enought for different sizes of cacao. I don't have a cranckendstein to compare, but I think this one makes a pretty good job.

I'll try to post some photos of the nibs, dust and shells.

Clay Gordon
@clay
06/27/12 02:22:21PM
1,680 posts

Please keep us posted!




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clay - http://www.thechocolatelife.com/clay/
Ilya Snowdon
@ilya-snowdon
09/14/14 05:35:08AM
20 posts

I am now going to try out some of those hand cracker cocoa mills.

But if you ever find your self with out one (like Me last week) i found that my little hand cranked mincer worked really well. you run the beans through without and mincing plates in, the cocoa beans crack in the auger Chamber and come out in nice almost cube shaped bits with large bits of separated shell.

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