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Topic: Alp Stats. after 10 batches (300 lines)
1) From: aryaniam
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Well, for those of you who want to know what an Alp 
does after the first 10 batches, here's my stats.  At least for the 5lbs of 
green Columbian that I used, I have concluded that the optimal setting and time 
for 'my' perfect aromatic roast is a setting of 5, or 17:30.  I have also 
gone up to 8.2 oz. and as low as 7.9, but it doesn't seem to make a bit of 
difference.  The average after-roast retention is about 85% of the original 
green bean weight.  This means an average loss of 15% of the green bean 
weight.  If one pays at minimum 15% less for green beans compared to 
roasted, they're already further ahead.  That does not even take into 
account the 'value' of truly fresh roasted coffee.  I have also concluded 
that 17:30 requires 1.5 days to fully age into proper aroma.
 
Hope you all profit from these 
numbers.
 
  
  
    
      

Batch

Original Wt. In Oz.

Final Wt. In Oz.

% Retained

Date Roasted

Roast Time Until Cooldown

Final Roast Color

Ambient Temp.

Location

1

8.0

6.8

85.0%

12/23/2000

17:30

Light Brown

37

Outside

2

8.0

6.8

85.0%

12/23/2000

18:00

Med. Brown

37

Outside

3

8.0

6.8

85.0%

12/23/2000

18:30

Med. Brown

37

Outside

4

8.1

6.9

85.2%

12/25/2000

17:30

Light Brown

49

Garage

5

8.1

6.8

84.0%

12/25/2000

19:00

Dark Brown

48

Garage

6

8.2

7.1

86.6%

12/28/2000

17:45

Med. Brown

40

Garage

7

8.2

7.0

85.4%

12/28/2000

17:30

L-M Brown

53

Garage

8

8.2

7.1

86.6%

01/01/2001

17:15

Light Brown

43

Garage

9

8.2

7.1

86.6%

01/01/2001

17:30

Light Brown

43

Garage

10

7.9

6.8

86.1%

01/04/2001

17:30

Light Brown

60

Garage

Total Oz. Used

80.9

69.2

85.5%

Total Lbs. Used

5.1

4.3

85.5%

  Thanks.   Frank in Texas  


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