Store coffee in an airtight glass jar. Acrylic or plastic containers absorb flavors and odors. Grind coffee just prior to brewing.
Coffee becomes stale quickly once it is ground.
Be sure to match the grind size with the brewer type being used. Measure 1 oz. of ground coffee to brew eight 10 oz. Use cool purified water or a high-quality bottled water. Turn off the coffee maker immediately after brewing. Additional heat and air is brewed coffee's worst enemy.