The chemical process is the same, oxidation of small food particles. The smaller the particle, the larger the percentage of spoilage you will get. Ground coffee is very small and has a huge surface area. The spoilage is equally wide spread, covering all sides of each ground. This is just a fact, sorry if you don't like it. I suppose some can taste the difference and others are not so sensitive to it. Either way, a grinder is mandatory for good coffee.
YMMV!
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jpender Senior Member Joined: 11 Jul 2011 Posts: 400 Location: California Expertise: I like coffee
Grinder: Kyocera CM-50 Vac Pot: S/S Moka Pot Drip: Aeropress
Posted Thu Mar 21, 2013, 3:01pm Subject: Re: High-end coffee maker worth it if not grinding beans myself ?
calblacksmith Said:
The chemical process is the same, oxidation of small food particles. The smaller the particle, the larger the percentage of spoilage you will get. Ground coffee is very small and has a huge surface area. The spoilage is equally wide spread, covering all sides of each ground.
I don't doubt that ground coffee spoils faster than whole bean. But I question your "apples to coffee" analogy. Spoilage rates vary -- or do you only eat bread made from freshly ground flour? Unlike coffee beans, apples are protected by their skin. I'll bet most people would not eat an apple that was finely chopped and left in the open overnight. But I think that many would agree that medium ground coffee sealed in a bag overnight would be very drinkable. The shelf-life for an opened bag of ground coffee -- how long before 50% of people didn't like it -- is on the order of 2-3 weeks. Contrast that with a diced apple.
The usual expectation is that whole bean coffee is at its best for up to about two weeks. A drip grind exposes approximately 15-20 times the surface area as whole bean coffee. So if it's strictly a surface area phenomenon then overnight wouldn't necessarily be too long. But the standard dogma is that 15 minutes is the limit.
Posted Thu Mar 21, 2013, 4:52pm Subject: Re: High-end coffee maker worth it if not grinding beans myself ?
Hello again!
Still weighing my options. If I have to "put up" with noise from the grinder at 4:30AM, it would be nice if I could still be half asleep while the whole process is happening.
msboo Senior Member Joined: 10 Nov 2012 Posts: 107 Location: Kentucky Expertise: I love coffee
Grinder: Baratza Virtuoso Drip: Bonavita
Posted Thu Mar 21, 2013, 8:09pm Subject: Re: High-end coffee maker worth it if not grinding beans myself ?
Hey lefebvre..... so glad you're still here. Hang around, someone w/comment on the Breville BrewYou---I'm not familiar with that brewer myself. Does it happen to be a brewer-grinder combo?
CMIN Senior Member Joined: 14 Jun 2012 Posts: 500 Location: South FL Expertise: I like coffee
Espresso: Crossland CC1 Grinder: Baratza Preciso
Posted Thu Mar 21, 2013, 9:01pm Subject: Re: High-end coffee maker worth it if not grinding beans myself ?
My neighbor has a Breville Youbrew, makes great coffee and pretty nifty. If you need a combo I don't think you can do much better than that for your needs.
CMIN Senior Member Joined: 14 Jun 2012 Posts: 500 Location: South FL Expertise: I like coffee
Espresso: Crossland CC1 Grinder: Baratza Preciso
Posted Fri Mar 22, 2013, 8:04am Subject: Re: High-end coffee maker worth it if not grinding beans myself ?
Youbrew grinder though is fairly loud, about the same as any other $100 grinder or so.
If grinding noise is really a deal killer (there's really no quiet motorized grinder even if you spend $$$$). For the money, you may want to get say the Bonavita (about $130-150 or so) and makes a great cup, and a hand grinder like the Hario Skerton. No noise, easy grinding.
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