We’re obviously not proponents of waste, but bagged coffee goes bad faster than you think. Coffee’s biggest enemies are oxygen and moisture, says Starbucks — and the moment that the coffee is ground is when it starts losing freshness. (It’s why Ultimo and coffee connoisseurs are proponents of freshly ground, freshly made coffee and espresso drinks.) But a major problem can occur even before you grind the beans (which, if you’re not doing it already, should be done right before you start brewing). It’s often how coffee is stored that causes a loss of oxygen and moisture.