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How to make ice drops and cold extracts in coffee shops? How many hours does it take to make ice drops? Why can't I drink freshly made cold extract directly?

Published: 2026-07-08 Author:

Last Updated: 2026/07/08, Cicadas in the distance were chirping non-stop. The dog days had just begun. The heat wave was rolling on the street, and boiling water was flowing from the faucet at home. The long summer vacation has arrived, and it is impossible to live without a cup of ice cold coffee. Cold extract and ice drops sound refreshing and refreshing, so they are the first choice drinks for many coffee lovers, but Qianjie

Cicadas in the distance were chirping non-stop. The dog days had just begun. The heat wave was rolling on the street, and boiling water was flowing from the faucet at home. The long summer vacation has arrived, and it is impossible to live without a cup of ice cold coffee.

Cold extract and ice drops sound refreshing and refreshing, so they are the first choice drinks for many coffee lovers. However, when Qianjie asked his friends what the difference between them was, some people couldn't answer. So today, Qianjie will come to the specific operation to tell you what ice drop coffee is, what cold extract coffee is, and how to make a cup of ice coffee at home.

As summer approaches, more and more cafes are beginning to rewrite the option of iced coffee on their menus. The so-called ice drop coffee is to use a mixture of ice and water, and let the ice drop drop drops fall onto the coffee powder drop by drop. Since the extraction process of ice drop coffee is very slow, it usually takes 6 to 12 hours. In addition, the amount of powder used is larger, so the price of ice drops is higher. At the same time, because the production of ice drops has equipment requirements, many friends were discouraged from making them at home.

The ice drip pots used in Qianjie in previous years are mainly divided into five parts: water container, regulating valve, powder cup, serpentine tube, and coffee liquid container. Each part has its own function. The water container is used to hold the ice-water mixture, the regulating valve is used to adjust the dripping speed of water, the powder cup is used to hold coffee powder, the serpentine tube is used to observe the color of the coffee liquid, and the bottom container is used to hold the extracted coffee liquid.

The specific parameters and operating steps when making ice-drop coffee on Qianjie are as follows:

Powder amount: 60g

Powder to liquid ratio: 1:10

Weight of coffee liquor: 600 grams

Degree of grinding: Pass rate of China standard No. 20 sieve: 82%

Time: 6--8 hours

1. Take out the powder cup, moisten the bottom and lay a layer of circular filter paper, and use a spoon to keep the filter paper close.

2. Pour 60 grams of ground coffee powder into a powder cup, shake the surface and spread a round filter paper.

3. Pour a small amount of room temperature water to moisten all the coffee powder, so that it can penetrate evenly during formal dripping

4. Add appropriate amount of ice-water mixture to the water container (fill with ice first and then use water)

5. Adjust the valve to a drip speed of 5 to 8 in 10 seconds

6. Always pay attention to the lower pot of coffee liquid during the dripping filtration process, and the extraction is not finished until it reaches 600ml.

7. After the extraction is completed, put the coffee liquor into a sealable container and place it in the refrigerator. After freezing and fermenting for one night, it can be drunk

But as said on the front street, iced coffee is limited by equipment and cumbersome steps, so instead of doing it at home, people will choose to go to a cafe to drink it. When they don't want to go out, they will choose extremely simple cold extraction. Practice to achieve freedom of iced coffee. Next, Qianjie will come to introduce you to the method of making cold brewed coffee.

The specific steps for making cold coffee on Qianjie are as follows:

Powder amount: 60g

Powder and water ratio: 1:11

Water volume: 660 grams

Time: 8--10 hours

Degree of grinding: Pass rate of China standard No. 20 sieve: 82%

1. Choose a sealable container

2. Pour the ground coffee powder into the container

3. Pour 660g of room temperature water according to the ratio of powder to water of 1:11, stir well and seal

4. Refrigerate in the refrigerator for 8- 12 hours

5. Remove and stir for a few rounds and filter

6. Seal and refrigerate the filtered coffee liquor for more than 3 hours before drinking

Compared with centralized extraction of ice drops, cold extraction belongs to a static immersion of water and powder, which has a thicker and deeper taste, and sometimes lacks cleanliness.

[About coffee beans]

Since cold-extracted coffee is coffee extracted at low temperatures and over a long time, more small molecule substances such as floral fragrance and fruit acid are extracted from coffee beans, while large molecule substances such as tannic acid and other bitter substances are difficult to extract. In addition, it takes 12 hours of low-temperature refrigeration and fermentation after the extraction is completed, so the flavor has obvious fermentation feeling and the sweet flavor of the coffee beans themselves, and the taste is sticky and smooth.

Therefore, when Qianjie chooses cold-extracted coffee beans, it generally chooses single pieces with acidity and clear aroma, or unique flavor. Among them, Front Street Kenyan small tomato coffee beans, Front Street black honey processed·blackberries, Front Street Xizhao·Colombia.

Front Street Kenyan small tomato coffee beans

Production area: Sika, Kenya

Processing plant: Asali Honey Processing Plant

Altitude: 1550 meters--1750 meters

Varieties: SL28, SL34

Treatment method: K72 water washing treatment method

The ice drop coffee made by Qianjie Little Tomatoes has the flavors of black plum, cherry and caramel. The whole cold extract is sour, sweet and very refreshing, suitable for quenching thirst and relieving boredom in the scorching summer.

Front Street Costa Rican Blackberry Coffee Beans

Production area: Tarazhu, Costa Rica

Manor: Pilon Treatment Plant

Altitude: 1500 meters--1700 meters

Variety: Kadura

Treatment method: Black honey treatment

The ice drops made from Front Street Blackberries have ripe grapes, dark berries and a slight fermentation feeling; while the cold extraction has a little more chocolate flavor, although the taste is strong but not bitter.

Front Street Colombia Claw Coffee Beans

Production area: Colombia Cymbidium

Manor: Boundary Manor

Altitude: 1700 meters

Variety: Xizhao

Treatment method: Double anaerobic sun treatment

Qianjie Xizhao itself has complex fruit aroma. Making ice drops can highlight the sweet aroma of passion fruit, mango and peach. Making cold extract coffee shows the characteristics of dried apricots, raisins and wine-core chocolate.

[About the degree of grinding]

Since the water temperature used for cold extraction coffee is low, which is quite different from the usual hand-brewed coffee at about 90 ° C. Low-temperature water extracts coffee powder. Since the rate of material exchange is greatly slowed down, in addition to extending the extraction time, it is also necessary to adjust the grinding degree of coffee beans, maximize the contact area between water and the surface of coffee powder particles, and extract as much of the ideal flavor substances in coffee powder as possible.

However, if the coffee powder particles are too thin, too much flavor substances will be extracted, including some unpleasant bitter flavors; if the coffee particles are too thick, the flavor will eventually be unclear and the taste will be too thin. Through many tests, Qianjie Coffee found that using a China standard No. 20 screen with a pass rate of 80 - 82% is ideal, and is generally about the same thickness as an ice hockey punch.

[About the proportion of powder and water]

Green vegetables and turnips, each has his own love. Because each drinker has different needs for coffee strength, some prefer strong coffee, some prefer light coffee, so it has no standard. Qianjie is used to looking at the powder-liquid ratio when making ice drops, looking at the powder-water ratio when making cold extraction, pressing 1:10 if you like strong coffee, and pursuing refreshing coffee can be 1:11 or 1:12;

In order to improve the taste, we sometimes add ice to the coffee. If you want a strong partner, drink it as soon as possible, while if you want a light partner, you can wait for the ice to melt slowly. As the ice becomes smaller, the concentration of the coffee decreases.

FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。