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Author Topic: difference in beans roasted on the same date  (Read 1885 times)

C-man

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difference in beans roasted on the same date
« on: 29/09/2012, 04:43 PM »
I have 2 different beans roasted on the same date and,
 
without changing the grind and on the same day, I have to put most of my 88kg weight on the tamper with one

bean and with the other bean the weight of the tamper it's self is enough to get the same 25 sec. 30ml flow from each.

both drinking well now.

how is this possible?


Rancillio S24  HG one bench grinder Rosco mini- Hand grinder,  Presso,  modded popper

zane

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difference in beans roasted on the same date
« Reply #1 on: 29/09/2012, 05:40 PM »
different beans, different density + different roast = differing brittleness, fines production & resistance to h2o.  times in the roaster & depths of roast will make a difference; initial ramp & moisture levels for different beans will lead to difference in elasticity of bean & resistance to grinding.

processing of the beans too makes a significant difference, naturals can often have 'more' soluble solids & hence pour slower, washed coffee has lost some something like 1% of the most soluble solids according to illy & so may put up less resistance & pour quicker

different beans = difference in resulting cups

C-man

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difference in beans roasted on the same date
« Reply #2 on: 01/10/2012, 10:08 AM »
great first post Zane!

since I grind by hand i notice a big difference in the hardness of the beans,

seems the harder the bean the more impeadence required to slow the flow.
Rancillio S24  HG one bench grinder Rosco mini- Hand grinder,  Presso,  modded popper

Brett H

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difference in beans roasted on the same date
« Reply #3 on: 01/10/2012, 05:26 PM »
different beans, different density + different roast = differing brittleness, fines production & resistance to h2o.  times in the roaster & depths of roast will make a difference; initial ramp & moisture levels for different beans will lead to difference in elasticity of bean & resistance to grinding.

processing of the beans too makes a significant difference, naturals can often have 'more' soluble solids & hence pour slower, washed coffee has lost some something like 1% of the most soluble solids according to illy & so may put up less resistance & pour quicker

different beans = difference in resulting cups

Mate, thank you for this fantastic post and welcome to Crema.   :thumb:
Diadema Junior Extra PID, La Pavoni Professional, Compak K10 Conical, Compak A8 Automatica, Fiorenzato F5, Rancilio Rocky, Behmor 1600, BBQ Roaster (retired), KKTO

C-man

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difference in beans roasted on the same date
« Reply #4 on: 02/10/2012, 04:25 PM »
yeah, Zane seems to be a in the know guy!

welcome to Crema
Rancillio S24  HG one bench grinder Rosco mini- Hand grinder,  Presso,  modded popper

Bezzera

 

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