What Beans Are Used for Cold Drip Coffee, How to Drink Cold Drip Coffee for Best Taste, What Is Cold Drip Coffee

Cold drip coffee costs more than regular iced coffee because making it requires more skill and takes far more time to extract the coffee oils, compounds, and caffeine.

What is Cold Drip Coffee?

Cold drip coffee, simply put, is a method of extracting coffee using "low temperature" and "slow dripping."

Typically, coffee brewing uses hot water to quickly extract and dissolve the aromatic molecules from the coffee cells, whereas cold drip replaces temperature with time. It uses ice water below 5°C, dripped onto coffee grounds, slowly dissolving the coffee's flavor and then dripping out the finished liquid drop by drop.

Making a cup of coffee can be very quick - an espresso takes only 25 seconds, siphon brewing requires 1 minute of stirring, and pour-over coffee needs 3 minutes. Cold drip, however, often requires several hours of waiting, typically 8 to 12 hours, adjusted according to your taste and the type of bean.

So, how do you make cold drip coffee?

POINT 1: Coffee Bean Selection

Cold drip is a concentrated extraction method suited to medium or medium-dark roasted beans. If you use dark roast or French roast beans, the resulting cold drip will be too strong and bitter.

POINT 2: Coffee Grind Size

The ideal grind size for cold drip is equivalent to that for pour-over single-origin coffee. Coffee ground at settings 3-5 on a grinder works for cold drip, with a coarseness similar to Taiwan Sugar No. 2. If the grind is too fine, the water will pass through the grounds more slowly and extend the extraction time, making the coffee overly strong. If it is too coarse, the water will flow too fast and the coffee will be too weak.

POINT 3: The Golden Ratio of Coffee Grounds to Ice Water

The ratio of coffee grounds to ice water can be adjusted to taste, approximately 1:10-1:12. You can also add a small amount (about 30g) of ice cubes to the ice water to hold the temperature.

If you use fresh coffee grounds that absorb water easily (ground from beans roasted within 7 days), it is best to reduce the grounds by 5-10g and let them fill about 8/10 of the container, so the coffee does not expand after absorbing water and overflow the grounds chamber.

POINT 4: Tips for Even Extraction!

Before starting the cold drip, you can use a small amount of room-temperature water (for example, 80ml of water for 40g of coffee grounds) and pour it in 3 circles, clockwise or in the same direction, starting from the center of the coffee grounds surface. This moistens the entire bed of grounds so the subsequent ice-water drops spread evenly and extraction is more uniform. Placing filter paper or a filter screen on the surface of the grounds has the same effect.

Precautions When Making Cold Drip Coffee

POINT 1: Optimal Dripping Speed

Place the coffee grounds in the middle grounds chamber and the ice water in the upper pot, then use a stopwatch to adjust the flow regulator valve so the ice water drips at a speed of 5-7 drops per 10 seconds. If it drips too fast, it will flood and clog; if it drips too slowly, it will prolong the overall cold drip time.

If the cold drip machine has no flow regulator valve, simply use all the ice water and keep the whole setup in the refrigerator throughout the process - the hole design will automatically maintain 5-7 drops per 10 seconds.

POINT 2: Secret to Better Flavor

Freshly made cold drip coffee has a refreshing taste. If you want a richer, smoother flavor, seal the container holding the cold drip with plastic wrap, or pour it into a clean glass bottle for cold fermentation. The fermentation time depends on the beans used: light roast beans need 1-2 days of cold fermentation, while dark roast beans require 4-5 days. Depending on the variety, the coffee may develop wine-like or berry flavors.

Chilled cold drip coffee will have a richer taste!

Here is FrontStreet Coffee's commonly used cold drip recipe: 30g of red-wine-processed [FrontStreet Coffee Hartman] plus 30g of natural-processed [FrontStreet Coffee Flower Queen], with a grounds:water:ice ratio of 1:5:5, taking about 8 hours. After dripping, refrigerate overnight. When drinking, add ice cubes to taste. It tastes rich in fermented wine aroma with a slight fruit acidity.

FrontStreet Coffee Recommendation

Cold drip rewards beans that carry clear fruit and sweetness, and FrontStreet Coffee's cold-drip-friendly lineup fits the method perfectly. The FrontStreet Costa Rica Mozart is a standout here: grown in a region famous for honey processing and treated with an anaerobic honey process, it has a naturally distinctive raisin aroma that turns into pronounced blueberry, black grape, and wine-like fermented flavors when made as cold drip, with a crisp, mouth-filling finish.

If you prefer a clean, lighter cup, FrontStreet Coffee's Kenya Little Tomato is an excellent choice. From Kenya's Thika region and made with the classic 72-hour washed process, its lively acidity comes through as cherry tomato and grapefruit in cold drip - refreshing and light, and ideal for summer. Both shine at the 1:10-1:12 ratio and 8-12 hour dripping time described above.