Once the coffee is done brewing remove the filter and coffee grounds. The longer the coffee sits the more oil residue is left in your coffee maker, this makes it harder to clean up and adds unwanted flavors the next time you brew. When cleaning your coffee pot do not use dish soap, use a little baking soda and hot water. Use 2 teaspoons baking soda in the water reservoir then brew a pot with fresh cool water. Then rinse all the coffee maker parts thoroughly. Then brew a pot of water before making your next pot of coffee.