Description
A vintage coffee brewing method using recirculating boiling water that often leads to over-extraction.
Technical
The percolator utilizes vapor pressure to cycle boiling water through coffee grounds repeatedly, causing hydrolysis of chlorogenic acids and excessive dissolution of bitter compounds like caffeine and trigonelline.
Culinary Significance
Produces strong, often bitter coffee due to prolonged exposure to high temperatures, historically valued for its robustness in outdoor settings.
Science
Primary Reaction
Maillard Reaction
Parameters
Temperature
96°C optimal
92°C to 100°C range
Time
6 minutes
4 minutes – 8 minutes
Equipment
stovetop or electric percolatormetal filter basketheat-resistant glass knob (for monitoring)