Update: my $22 bag of Ethiopian beans from a place in Portland went stale in 9 days because of one dumb mistake
So 3 weeks ago I grabbed a bag of washed Ethiopian from a roaster in Portland while visiting my brother, roast date stamped right on it, 4 days old when I got it. I was pumped. Then I made a rookie move and kept the beans in the bag they came in, just rolled the top down and clipped it with one of those bag clips. Fast forward 9 days and the fruit notes were straight up gone, it tasted like wet cardboard with a hint of lemon. I brew pourover, 15g to 250g, and I could tell something was off because the smell coming off the grinder was flat. Turns out the bag had one of those one way valve things but the seal was already breaking down and air was getting in every time I opened it. Moved the rest into a mason jar with a tight lid and put it in the cabinet away from the stove, but by then it was too late for that bag. Anyone else had a bag die way faster than expected, and do you actually trust those one way valve bags or just transfer right away?
Did you check the valve by squeezing the bag? I used to just trust those one way valve bags and leave beans in them for weeks, figured the valve was doing its job. Then I had a similar thing happen with a bag of Colombian, lost most of the good flavor by day 10. Now I move beans into a mason jar the second I open the bag, valve or no valve. Those valves let gas out but they don't stop air from sneaking in once the seal gets weak or you keep rolling the top down. A jar with a tight lid has been way more reliable for me. Nine days is rough for a $22 bag, but at least you know what went wrong.