The Thrifty Apartment
The first step is to remove any coffee grounds and old coffee left behind from your last brew of coffee. Take apart the removable parts of the coffee maker, including the brew basket and coffee pot.
Wash the coffee pot and filter basket with hot, soapy water and a sponge. This will remove coffee stains and dirt buildup. Pat them dry with a paper towel or dishcloth. Put all the parts back in place except for the coffee pot.
Fill the coffee pot with three cups of vinegar and one cup of water. You can easily measure the amount of vinegar using the coffee pot’s measurement line. Your goal is to fill the coffee pot a third of the way.
Place an empty paper filter into the coffee maker’s basket.
Begin to pour the water and vinegar solution into the coffee machine’s water reservoir as if you were making a pot of coffee. As you pour, you will hear the coffee maker making its usual sound when it is ready to brew. Then, turn the spout and run a brewing cycle.