Ice Drip
Ice drip slowly passes ice-cold water drop by drop through coffee grounds, producing a delicate, bright, and layered concentrate over several hours.
What is Ice Drip Coffee?
Ice drip (also called Dutch Coffee or Water Drip) passes ice-cold water drop by drop through a bed of coffee grounds. Unlike cold brew's full immersion, ice drip is a drip-filter cold extraction: water flows at roughly 1–2 drops per second and the process takes 4–8 hours.
Ice Drip vs. Cold Brew
| Ice Drip | Cold Brew |
|---|
| Method | Drip filter | Full immersion |
| Time | 4–8 hours | 12–24 hours |
| Texture | Delicate, layered | Rich, full-bodied |
| Acidity | Bright, clear | Low-acid, sweet |
| Clarity | High | Medium |
Basic Extraction Parameters
| Parameter | Recommended |
|---|
| Grind size | Medium-fine (between pour-over and French press) |
| Coffee-to-water ratio | 1:10 – 1:12 (concentrate) |
| Water temperature | 0–10°C (ice water or iced) |
| Drip rate | 1–2 drops per second |
| Extraction time | 4–8 hours |
Flavor Characteristics
- Bright acidity: low-temperature extraction preserves volatile aromatics lost in hot brewing
- Delicate sweetness: no bitterness or harshness — a clean, pure flavor profile
- Wine-like development: after 1–2 days of refrigerated aging, the concentrate develops notes reminiscent of white wine or floral honey
Equipment
Most ice drip towers are three-part: an upper chamber (ice water), a middle grounds basket, and a lower collection vessel. The adjustable valve on the upper chamber controls the drip rate.
Serving Suggestions
The concentrate can be enjoyed directly over ice, or diluted 1:1 to 1:2 with water. Refrigerated, it keeps for 5–7 days and the flavor becomes more rounded as it ages.