Tota on tullut kokeiltua omien paahtojen kanssa ja heti paahdon jälkeen pakastettu kahvi ei oikein kunnolla maistu miltään. Parempaa on kun antaa ensin levätä ja sitten pakastaa.
Home-Baristan testissä (jossa käytettiin -26C pakastinta, silläkin lienee vaikutusta) kuitenkin toteavat:
"Freshly roasted coffee that is immediately frozen after roasting in a near airtight container in a very cold freezer, can be kept undisturbed in the freezer for at least 2 months and be expected to produce espressos that are not obviously inferior to those made from fresh coffee that has never been frozen."
Testissähän tosin käytettiin ainoastaan 'suoraan pakkaseen' -metodia, joten sikäli siitä ei voi edes päätellä onko kahvin lepuuttamisesta hyötyä/haittaa. Lopussa vaan todetaan, että sitäkin pitäisi vielä tutkia:
"Freezing is a viable method of preserving the freshness of very fresh coffee. Exactly how long the usable lifespan of coffee can be extended with freezing is unknown, although we do know that if frozen immediately that lifespan extends to at least 8 weeks. In this experiment, a very specific methodology was employed, and exactly how far one can deviate from it and expect to get good results is unclear. The previously frozen coffee we used was frozen immediately after roasting, within about an hour, in semi-airtight packaging in a very cold freezer (about -15°F / -26°C). It was then defrosted, only once, within the same packaging before it was exposed to outside air, reducing or eliminating the possibility of condensation.
If the coffee one contemplates freezing is not "fresh" to begin with, it is doubtful that freezing will do much of anything positive. To me this means that freezing is probably of no value when dealing with purchased coffee of uncertain age. In the case of coffee that has partially degassed, that is perhaps several days out of the roaster, it is unclear from this experiment whether freezing will extend shelf life significantly. Since this is going to be a fairly common scenario for home espresso enthusiasts ordering online, it deserves further comment."
Taas mennään makuasiapuolelle (siitähän kahvissa juuri tietysti on kyse). Jokaisen kannattanee kokeilla hienosäätää oman maun mukaan. Edes Jim Schulmanin kaltaisen kahvigurun makuaisti ole samanlainen kuin kaikkien muiden.
