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Espresso: General Discussion
Cause of unstable crema?
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snoboy
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Joined: 4 Jun 2004
Posts: 452
Location: Rossland, BC
Expertise: I love coffee

Espresso: famous Silvia... now PID
Grinder: modded Rocky SD
Roaster: SC/CO
Posted Tue Apr 19, 2005, 9:38am
Subject: Cause of unstable crema?
 

By unstable crema I mean cream that does not last even 1-1/2 minutes.

I have a batch of Moka Kadir, roasted on last Friday (4days) and it produces gobs of beautiful crema out of the spouts, but it is almost completely gone by the time that I have steamed milk... otherwise it tastes beautiful, 25s shots, all factors seem normal.

I assume that the freshness is one factor, as the bubbles in the crema are larger, but I am curious if there are any other theories.
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coffee_slob
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Joined: 5 Aug 2004
Posts: 126
Location: upper left-hand corner of US map
Expertise: I love coffee

Espresso: Rancilio Silvia
Grinder: Rancilio Rocky Doserless
Drip: Cuisinart DCC-280 Grind&Brew
Roaster: Swissmar Bravi
Posted Tue Apr 19, 2005, 10:52am
Subject: Re: Cause of unstable crema?
 

Bad crema karma?  Did you perchance say mean things about some one else's coffee in a past life?
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scubadoo97
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scubadoo97
Joined: 24 Jun 2003
Posts: 677
Location: Florida
Expertise: I love coffee

Espresso: Solis SL70
Grinder: Mazzer Mini & Solis Maestro...
Vac Pot: got one of those too
Drip: Aeropress, Clarity, FP,...
Roaster: SC/TO
Posted Tue Apr 19, 2005, 11:03am
Subject: Re: Cause of unstable crema?
 

I find beans that are too fresh will give an effervescent type of crema.
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shadowfax
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shadowfax
Joined: 20 Jan 2005
Posts: 779
Location: Houston, TX
Expertise: I love coffee

Espresso: La Marzocco Shot Brewer
Grinder: Compak K10
Posted Tue Apr 19, 2005, 8:37pm
Subject: Re: Cause of unstable crema?
 

Scubadoo, I agree, I think. I just got some Code brown from coffee emergency. it was roasted saturday morning. On monday, the first brews had very short-lived crema. I brewed them too hot, though, so that may contribute to the problem, and I can't substantially confirm what you say.

But the crema is lasting longer than it did then, now.
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