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I'm buying ground coffee in the packages, which unfortunately are 0,5 kg (the smallest ones). And they last for a few months for me. At the end of that period, the coffee has no aroma anymore :(

Buying full grains coffee and melting it is not an option - I don't have a mill or an express, and I'm living in rent appartment so everyting that won't fit to my backpack will have to be thrown away.

Would closing the opened package of ground coffee in clip&close container help to prevent the aroma?