Percolator coffee is ready when it’s strong enough and not yet bitter. How long you percolate depends on the size of the pot and how strong you like it—usually 5–10 minutes once the water is cycling. This guide covers timing, heat level, and how to tell when to stop. For the full method, see our how to percolate coffee and coarse ground coffee guides.

Typical Percolate Time

5–10 minutes of gentle perking is the usual range. Start counting when the water is actively cycling through the grounds (you see it in the lid or hear the perk). Shorter (5–6 min): lighter, less risk of bitterness. Longer (8–10 min): stronger but can turn bitter if the heat is too high or the grind is too fine. 7–8 minutes is a good middle ground for many percolators. For a large pot (e.g. 30-cup), see how much coffee for 30 cup percolator (Priority 2) for dose; timing may be similar or slightly longer.

Heat Matters

High heat makes the water cycle fast but can over-extract and scorch. Low to medium-low after the initial perk keeps a steady cycle without boiling the coffee. Reduce heat once perking starts and hold it there for the rest of the time. Remove from heat when the coffee in the lid (if you have a glass knob) looks dark enough, or when the timer hits your target.

When to Stop

Stop when the coffee is as strong as you want and before it tastes bitter or burnt. If you’re new to percolating, try 7 minutes, taste, and adjust next time. Use coarse grind so you have a bit more margin before over-extraction. For more on the method, see how to percolate coffee and best coffee makers.

Conclusion

Percolate for 5–10 minutes (typically 7–8) once the water is cycling, on low to medium-low heat. Stop when the coffee is strong enough and before it’s bitter. For the full steps, see how to percolate coffee and coarse ground coffee.

See Also