Why Does a Percolator Stop Perking?

As the brew continually seeps through the grounds, the overall temperature of the liquid approaches boiling point, at which stage the "perking" action (the characteristic spurting sound the pot makes) stops, and the coffee is ready for drinking.

Do percolators stop on their own?

This process is repeated as long as you want to get the desired brew strength, though some electric percolators will stop on their own. As the water moves from one chamber to the other it builds up pressure, which helps to extract more flavor from the beans.

How long should a percolator perk?

How long do you let coffee percolate in a percolator? Depending on the desired strength level, you'll want to percolate coffee for 7 to 10 minutes. It's important to keep even heat in the percolator during this process (an area where electric coffee percolators definitely shine).