Purchasing freshly roasted coffee is paramount to getting the most flavor and enjoyment from your cup. Roasted coffee beans, no matter how high quality, begin losing flavor within the first week. Your peak is within 4 days of roasting. After 1 month, you've lost most of the quality of the roast. If you really want to enjoy your coffee, buy it freshly roasted, grind it yourself, and brew it using an aeropress!