How do I make a cold drip coffee?

Cold drip coffee, often associated with the 'Kyoto-style' method, is fundamentally a slow-percolation process rather than an immersion one. While immersion cold brew relies on total saturation of grounds for 12 to 24 hours, cold drip functions like a hyper-extended pour-over. By utilizing gravity to pull water through a bed of coffee at a precise, slow rate, the producer can highlight the delicate volatile aromatics of a high-quality single-origin lot that might otherwise be muted by the long-term oxidation inherent in immersion methods. For the farmer, this method is a superior vehicle for showcasing the specific terroir of a harvest, as it minimizes the heavy, muddy body often associated with long-steeped cold brews. A common misconception is that cold drip is simply 'cold brew made faster.' In reality, it is a distinct extraction profile that requires careful management of the drip rate—usually one drop every two to three seconds—to prevent the coffee bed from channeling or over-extracting. The equipment, often a glass tower, is designed to maintain this steady state. Because the water is not heated, the extraction relies entirely on time and the solvent properties of the water, making the grind size and the uniformity of the coffee bed critical. If the bed is uneven, the water will bypass sections of the coffee, leading to a thin, sour cup. By controlling the drip, you are essentially performing a cold-water extraction that preserves the bright acidity and floral notes that many specialty producers work hard to cultivate at the farm level.