Cleaning a coffee carafe is an important task that should be done regularly to keep it clean and free of bacteria. There are many ways to clean a coffee carafe, but the most common way is to use a plunger. To use a plunger, first place the carafe on the counter so that the plunger is pointing down. Pour enough water into the carafe to cover the plunger and then place the carafe back on the counter. Use your hands to push and pull the plunger up and down until all of the water has been used. Be sure not to overfill or you will create bubbles in your coffee. Once all of the water has been used, place the plunger back in its original position and pour another cup of water into the carafe. Use your hands again to push and pull until all of the water has been used again. Be sure not to overfill or you will create bubbles in your coffee again.