A hot-air popcorn popper also works very well. The temperature is just right for roasting coffee and the air will keep the beans moving quickly so they won't scorch. At first, the beans will be too heavy for the hot air to move them, but keep stirring them until they start moving. Many factors effect brewing the perfect cup of coffee . Your coffee maker pot and filter container need to be cleaned at least once a week.
Bitter oils stick to the glass container and plastic filter holders.
Always protect coffee from moisture, light and iar to preserve the flavor. Keep coffee in an air tight container and store in dark, cool place. Freezing fresh coffee will prolong its life. But daily removal from the freezer can cause moisture to freeze on the coffee and effect its flavor. Always use the best quality beans.