thusband I bought a bunch of 250g bags for my roasted coffee but forgot to buy them with the valves. Will that make a difference? I’d say no but I just want to check.
I still pack using no valves, but if I do use a valve bag, I’ve 100s of them, I tape over the valve! Coffee lasts much longer…just get as much air out of the bag as you can before sealing it.