HomeRoast Digest


Topic: 400 espressi and AlChemist's slipped finger (8 msgs / 142 lines)
1) From: David M. Lewis
I just re-checked John's numbers, since they struck me as odd, and 
Maria had repeated them in "Tiny Joy". They are. 400 doubles at 18 g 
per comes to 7.2 kg of roasted coffee. John accidentally divided by 
2.2 to convert that to pounds, when he should have multiplied by 2.2. 
Given the 20% factor Les used for roast loss, etc., you wind up 
needing 19 pounds of green, not 5. It's still a bargain, just not 
quite so much of one.
Best,
	David
-- 
"It is difficult to get a man to understand something when his salary 
depends upon his not understanding it."
	-- Upton Sinclair

2) From: Frank Haist
This still doesn't seem correct. I thought I had posted something 
initially that suggested a 400 shots would require about 6.2 lbs (turns 
out that even though the message is in my "sent" folder, there is no 
indication of it in the archives). I had based that on 7 g shots (wow, 
you guys make strong shots! But maybe in superautos, you need 9g to get 
decent shots) and no compensation for roast loss. The following was the 
rationale I sent, or at least though I sent:
"Well, just roughly, an espresso shot is 7 grams. There are 28.2 g/oz, 
so roughly 4 shots per ounce. That works out to about 64 shots per 
pound. So, 400 shots would be about 6.25 lbs (400 shots / 64 shots/#). 
Hope this helps. "
So now, adjust for 9 g shots and 20% roast loss, I get: 3.13 shots/oz, 
which is 50.13 shots/pound. Now, considering 20% loss, that would be 
40.1 shots/pound. That equals about 10 pounds of greens are needed, or 
roughly 4.5 kilos.
Am I mistaken here? How did you get 19 pounds of green? Given 20% roast 
loss, that would be 15.2 pounds roasted or about 6.9 Kg roasted, or 6900 
g. So, 6900g/400 shots = 17 g/shot (roughly). Now that would be one 
helluva shot! Given that is a double shot, the estimate of about 10 
pounds seems more accurate.
The original post asked about 400 shots, not double shots. I could have 
made a mistake somewhere and am happy to be proved wrong. Am I?
---Frank
David M. Lewis wrote:
<Snip>

3) From: David M. Lewis
At 10:11 PM -0800 1/29/05, Frank Haist wrote:
<Snip>
You're right given your assumptions. The normal shot around here is a 
double pulled with about 18 grams of coffee, so that's the 
difference. The original poster didn't say which assumption they were 
using.
Best,
	David
-- 
"It is difficult to get a man to understand something when his salary 
depends upon his not understanding it."
	-- Upton Sinclair

4) From: Jeff Oien
David M. Lewis wrote:
<Snip>
When using 18 gr, does that fit in the filter basket or do you need
to overfill and tap to get it settled down and level?
JeffO

5) From: Tom & Maria - Sweet Maria's Coffee
<Snip>
I don't use 18 grams! For me, that's too much. Then again, I don't 
weigh at all ... I just go by feel, but I think I am down at 15-16 or 
so for my doubles.
-- 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                   "Great coffee comes from tiny roasters"
            Sweet Maria's Home Coffee Roasting  -  Tom & Maria
                      http://www.sweetmarias.com                Thompson Owen george

6) From: John Blumel
On Jan 31, 2005, at 2:28pm, Tom & Maria - Sweet Maria's Coffee wrote:
<Snip>
I think it varies according to the baskets you use and how your machine 
likes it to be filled.
John Blumel

7) From: Les
On Mon, 31 Jan 2005 11:28:37 -0800, Tom & Maria - Sweet Maria's Coffee
 wrote:
<Snip>
<Snip>
Tom, you have not lived unless you that tried a triple LM basket (23
gr. of coffee) crotchless style restretto!

8) From: AlChemist John
It is what fits in my Gaggia basket.  Does anyone routinely pull single 
shots?
Sometime around 09:48 1/31/2005, Jeff Oien typed:
<Snip>
--
John Nanci 
AlChemist at large
Zen Roasting , Blending & Espresso pulling by Gestalthttp://www.dreamsandbones.net/blog/http://www.chocolatealchemy.com/


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