Top positive review
59 people found this helpful
on January 30, 2014
We roast our own coffee and use Tightvac Coffeevacs for storing whole beans.
Most of the critical comments about the Coffeevac -- no matter which size or color -- on Amazon seem to represent a misunderstanding about how coffee stales. The Coffeevac does not create much of a vacuum, just enough to seal the lid to the canister. But a vacuum doesn't do much in the way of keeping coffee fresh.
The Coffeevac's one way valve, only operates when the lid is closing. Afterwards, the canister is sealed and will not release gas. However, the gas released by coffee is carbon-dioxide which does not cause coffee to stale.
It's true the Coffeevac is made out of plastic, not stainless, or magic unobtanium. However the Coffeevac is reasonably priced and works as well or better than anything else at any price.
Unfortunately, it does not come in red. Red would be nice.
The Coffeevac will slow bean staling by about 3X - 4X compared to hopper or ordinary coffee jar storage. How you brew makes a difference in terms of how you'll perceive both resting and freshness. For espresso use we find that gives us an ideal rested/freshness window of 8 - 21 days ish post-roast. Beans roasted for non-espresso stabilize and stale quicker; and their window is 3 - 14 days ish.
If you want to hold your beans at "peak freshness" for longer periods, you'll need to do some careful freezing.