Posted Tue May 29, 2012, 1:31pm Subject: Freezing Coffee -- more discussion fodder, scientific study
So apparently a coffee company sponsored a study... They "examined a variety of coffee samples stored in three different environments: the freezer 0 degrees Fahrenheit, the refrigerator 36 degrees Fahrenheit and on a counter room temperature at 72 degrees Fahrenheit, over a 12 week period."
Excerpt from news release: "In the study, a sample from each storage environment was cupped and tested for moisture every 2 weeks; then brewed and checked for color consistency every 4 weeks. Throughout the 12 weeks, the samples were cupped and tasted in a blind taste test by three resident Q Graders at Don Francisco's Coffee headquarters. The results revealed the best cup of coffee is achieved starting with whole beans stored in an airtight container in the freezer for a maximum of 6 weeks. For pre-ground coffee, the maximum storage time decreases to about four weeks."
So far, I can't seem to find a copy of the study itself on the web.
disclosure: I am a big advocate of deep freezing any coffee that is (a) freshroasted, and (b) that I cannot brew within a few days from the roaster.
Yes, I see the term "nitrogen-flushed" used in the article. That sort of packaging (used for pods and k-cups, too) does prolong shelf life considerably. I get a little annoyed when I see people acting like the Rule of Fifteens was (a) written in stone by the Lord and (b) meant to apply in all circumstances. It's a guideline--nothing more. For example, try grinding fresh into a Ball jar, sealing it up immediately, and brewing the ground coffee after 24 hours. It's great, even without nitrogen flushing.
NobbyR Senior Member Joined: 10 Jul 2011 Posts: 2,046 Location: Germany Expertise: I love coffee
Espresso: Poccino Opus One, Ariete Grinder: Eureka Mignon Istantaneo Vac Pot: N/A Drip: Melitta Linea Unica de Luxe Roaster: N/A
Posted Wed May 30, 2012, 9:15am Subject: Re: Freezing Coffee -- more discussion fodder, scientific study
Actually, I do believe that industrial packaging, and freezing anyway, does work up to a certain degree. Even though the "best before" date printed on packages (usually set two years after roasting) certainly doesn't mean that the beans remain fresh that long, I have enjoyed coffee like Tre Forze! or Lucaffè up to two months after roasting. I don't know how great it would have been within the 15 days margin, but it was still good. Older than two months, however, is a no go without freezing.
*** "This drink of the Satan is so delicious that it would be a shame to leave it to the infidels." (Pope Clement VIII on coffee, when he was urged to ban the beverage)
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