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Oily film left on top of coffee....
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Discussions > Coffee > Machines > Oily film left...  
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Senior Member


Joined: 8 May 2005
Posts: 823
Location: Baltimore, MD
Posted Thu Jul 28, 2005, 1:42pm
Subject: Re: Oily film left on top of coffee....
 

Chris, I didn't mean to suggest that you start drinking coffee black or with skim milk. I just thought that, as a one-time experiment, it would be helpful to see if the film formed in the absence of the fat from the half-and-half. That would indicate whether the oil came from the coffee or the half-and-half.
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Stewart
Senior Member
Stewart
Joined: 20 Jun 2003
Posts: 414
Location: North of Toronto
Expertise: I love coffee

Espresso: Rancilio Silvia
Grinder: Mazzer Mini,*$ Barista/Solis...
Vac Pot: E Santos,Vintage...
Drip: not
Roaster: 4 lb RK drum,SC/GG combo,WB...
Posted Fri Jul 29, 2005, 7:30am
Subject: Re: Oily film left on top of coffee....
 

Ron:

Here is a link to Neilsons' dairy products in Canada.

http://www.neilsondairy.com/en/products_creams.htm



Chris:

Try a lower fat content cream, and see if there is still oil on the surface. My wife is a tea drinker and uses 10% (ugghh) so the fats stratify on the surface if left too long. There are oils in coffee but I dont think they would cut through the cream, unless you are using a connoisseur ratio in your coffee brew.

I use 2% in my coffee and that's it. No sugar. One day I will drink it black, but I don't get any oils on the surface if I leave it.

Stewart
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Terje
Senior Member


Joined: 14 Jul 2005
Posts: 16
Location: Sweden
Expertise: I love coffee

Posted Sun Jul 31, 2005, 4:28am
Subject: Re: Oily film left on top of coffee....
 

ChrisNY Said:

I would like to get rid of the film...

Posted July 28, 2005 link

Why on earth would you want to do that?

This ia an oily beverage you're drinking, OK. When you take your freshly roasted beans and pour them on a plate to cool them off the plate gets rather slippery with all the oils, especially if you've roasted the beans hard and they have gotten shiny.

Cherish the oils, the film or whatever you wanna call it.

I mean, how does it taste? Is the film disgusting to you cause it looks bad or becuase you actually get a taste you don't want?
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ChrisNY
Senior Member


Joined: 26 Jul 2005
Posts: 3
Location: NYC
Expertise: I live coffee

Posted Sun Jul 31, 2005, 6:12am
Subject: Re: Oily film left on top of coffee....
 

Here is a picture, its hard to see (sorry only had a camera phone to take the picture). Its hard to notice but on the top right of the picture the "film" is developing, it also stuck to the cup as a clump..... shocking I know.

ChrisNY: coffee.jpg
(Click for larger image)
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Terje
Senior Member


Joined: 14 Jul 2005
Posts: 16
Location: Sweden
Expertise: I love coffee

Posted Sun Jul 31, 2005, 10:24am
Subject: Re: Oily film left on top of coffee....
 

What is it that you have there in your cup?

It is brown...
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cannonfodder
Senior Member
cannonfodder
Joined: 14 Dec 2004
Posts: 873
Location: Dayton, Oh
Expertise: I live coffee

Espresso: ElektraA3,Faema2G, Isomac,...
Grinder: Cimbali, Mazzer
Vac Pot: Dont smoke pot or vac it.
Drip: Press pot
Roaster: Hottop, drum roaster
Posted Mon Aug 1, 2005, 3:59pm
Subject: Re: Oily film left on top of coffee....
 

ChrisNY Said:

it also stuck to the cup as a clump

Posted July 31, 2005 link

Ewwwww! The oils from the coffee should not do that. If you drink black coffee, you will notice oily spots or swirls on top of the liquid. Clumps are not good. That sounds like the milk solids are separating (butter/curdling) and that is not good eats. Coffee that requires a spoon and chewing is, well, grouse. Try a different percentage milk fat cream from a different manufacturer.

 
Dave Stephens
www.home-barista.com
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cannonfodder
Senior Member
cannonfodder
Joined: 14 Dec 2004
Posts: 873
Location: Dayton, Oh
Expertise: I live coffee

Espresso: ElektraA3,Faema2G, Isomac,...
Grinder: Cimbali, Mazzer
Vac Pot: Dont smoke pot or vac it.
Drip: Press pot
Roaster: Hottop, drum roaster
Posted Mon Aug 1, 2005, 4:03pm
Subject: Re: Oily film left on top of coffee....
 

What type of equipment are you using (grinder/brewer) and have they been cleaned recently? Could it be spoiled essential oils coagulating the milk (your making coffee flavored cheese!).

 
Dave Stephens
www.home-barista.com
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