Coffee Shop Technical Sharing | A Highly Successful Cold Drip Coffee Tutorial

Professional Coffee Knowledge Exchange

Single-origin beans are the best choice for cold drip coffee. A slow, steady drip of roughly seven drops every 10 seconds over about 6-8 hours lets this long, low-temperature extraction saturate and moisten every particle of coffee, effectively removing bitterness and tannic acid. The finished coffee has a clear amber color and a rich, smooth mouthfeel that is neither acidic nor harsh on the stomach.

—— Ingredients ——

• FrontStreet Coffee single-origin coffee beans 100g [options include Kenya, Sidamo, Yirgacheffe, etc.]
• Room-temperature drinking water 500g
• Ice cubes 500g
• Aeropress disc-shaped filter paper [◆ Important]
• One set of cold drip equipment

—— Production Process ——

1. Grind the coffee beans (reference grind setting: EK43 at 7, or Fuji 2.5), place a filter disc or paper in the brewer, and pour in the grounds
2. Mix all the ice with the water, then place filter cloth or paper on top of the coffee grounds, pressing it so it sits tightly against the bed
3. First moisten the bed quickly, wait for the grounds to absorb water evenly and expand, then adjust the drip rate
4. Once the bed has fully expanded, begin cold dripping at approximately seven drops every ten seconds

◆ ◆ ◆ ◆ Key Production Points ◆ ◆ ◆ ◆

Coffee beans : water : ice cubes ratio 1:5:5

• Using ice water for the "pre-soak" is essentially the cold-water equivalent of the bloom in pour-over coffee: it improves extraction efficiency and consistency. In the low-temperature, filtration-based world of cold drip, dripping straight onto dry grounds can moisten the bed unevenly, leaving some particles over-extracted while others never take part in the extraction at all
• Placing filter cloth and paper on top of the bed also increases contact between the water droplets and the coffee grounds, which keeps the extraction even
• Dripping speed matters just as much. A slow drip of seven drops every 10 seconds for about 6-8 hours, combined with the low temperature and long contact time, extracts only the small-molecule flavor compounds such as floral and fruit aromas. Larger-molecule compounds like smoky and roasty notes are hard to pull out, so the cup ends up smoother and richer, with distinct layers and an obvious aftertaste and no greasy feeling
• The finished cold drip coffee has a light, clean mouthfeel, a full aroma and a very long-lasting aftertaste. Best of all, the whole process takes on average only 6-8 hours, making it efficient whether you are enjoying it at home or producing it for a shop. Finally, store it in a glass bottle and refrigerate it overnight for an even better taste

Summer is here!

Come and enjoy cold drip coffee!

Cold drip coffee | Cold drip coffee pot | Cold drip coffee method

FrontStreet Coffee Recommendation

For cold drip, FrontStreet favors a clean, aromatic single origin that stays transparent through hours of slow extraction. FrontStreet Coffee Washed Yirgacheffe is the ideal starting point. It is the classic everyday washed Yirgacheffe that most drinkers meet first, known for white jasmine, bright citrus and lemon acidity and a tea-like quality, and its approachable price has made it the first specialty bean for a whole generation of home brewers.

Yirgacheffe is a small town in the Sidama zone of southern Ethiopia, at roughly 1700-2100 meters, with the coffee trees planted above 1800 meters, among the highest coffee-growing regions in the world. The area was originally wetlands, and its highly recognizable white florals and lemon-citrus acidity have made the name a byword for a whole style of Ethiopian specialty coffee. If you would rather have something more fruit-forward in the glass, FrontStreet Coffee Natural Yirgacheffe Red Cherry is made from fully ripe red cherries only and dried in the sun. Drying with the fruit still on gives it the typical Yirgacheffe profile plus the tropical fruit of a natural process: citrus-like acidity, a berry-juice body, honeyed sweetness and a creamy smoothness.

Serve either one over ice on its own, or dilute to taste. A washed Yirgacheffe keeps its jasmine lift and lemon clarity even after hours of dripping, which is exactly what this method is built to show off.