How Does Panama Geisha Work in a Cold Brew Recipe?

Cold brew coffee is made by steeping coffee grounds in ice water for 6 to 8 hours of low-temperature extraction, then fermenting the result in the refrigerator, which produces a clean, delicate cup. The method traces back to the Netherlands, where Dutch traders in Indonesia brewed coffee cold instead of over heat. Beans such as Panama Geisha suit this slow, cold extraction.

Because cold water pulls flavor slowly, bean selection matters as much as technique. Washed lots keep the cup crisp and tea-like, while fruit-forward natural lots add sweetness. A typical starting ratio is 1:10 to 1:12 coffee to water with a medium-coarse grind, and the drip rate should stay slow and even rather than fast.

In the height of summer, a glass of cold brew coffee always brings refreshing coolness. Unlike regular iced pour-over coffee, cold brew coffee relies on ice water for long, low-temperature extraction, usually requiring 6 to 8 hours or even longer, followed by refrigerated fermentation, to present a clean and delicate flavor. This article will start from the Dutch origins of cold brew coffee, sort out the ideas for choosing coffee beans for different flavor preferences, and take [Front Street Panama Hacienda La Esmeralda Diamond Mountain] as an example to break down in detail the production parameters such as coffee powder amount, coffee-to-water ratio, grind size, and drip speed, helping coffee enthusiasts make a pot of cold brew coffee worth waiting for at home.

For more specialty coffee knowledge, please follow the WeChat public account: FrontStreet Coffee

In the coffee world, iced coffee has always enjoyed immense popularity, and it is even more sought after during the scorching summer, as lively as fans crowding around an idol. When it comes to iced coffee, besides the easy-to-make iced pour-over coffee, there is also cold brew coffee that requires patience and time for slow extraction. Its principle is not complicated: mix ice cubes and water in proportion, and by adjusting the dripping frequency of the ice water, perform low-temperature extraction on the coffee grounds. The entire extraction process often lasts 6 to 8 hours, and afterward it still needs refrigerated fermentation, so making cold brew coffee cannot be rushed. A delicious cold brew is indeed worth the wait. So where did cold brew coffee come from? Next, Front Street will talk about the history of cold brew coffee, as well as the selection of coffee beans and the specific production method.

History of Cold Brew Coffee

The origin of cold brew coffee can be traced back to the Netherlands. During the Dutch colonial period in Indonesia, they not only transplanted coffee trees to Indonesia and promoted local coffee cultivation, but also created this kind of cold brew coffee.

Around 1699, the Dutch sailed the seas year-round. It was difficult to make hot coffee on board at any time, and coffee was not easy to preserve. They also believed that the sourness of coffee would make the body uncomfortable, so they began to think about how to reduce the sourness of coffee. Since hot water is precisely the key to extracting the sourness of coffee, they tried using ice water for extraction, hoping to reduce the sourness. Ice water does not easily dissolve the acidic fats in coffee, can effectively inhibit the release of sourness, and at the same time slows down coffee oxidation, thereby extending preservation time. This method of brewing coffee with cold water was born on the Indonesian island of Java.

Brewing coffee with ice water also has another advantage: during the drip process, the temperature is very low, so the aroma does not easily volatilize. Unlike brewing with hot water, where the aroma disperses in all directions, the coffee's aroma can be retained in the liquid. When we taste it, the temperature in the mouth reacts chemically with proteins, and only then is the aroma released. The English name for cold brew coffee is "Dutch Cold Water Coffee," in which "Dutch" is the general term for Dutch people.

Coffee Bean Selection

Which beans to use for cold brew coffee mainly depends on personal flavor preference. If you like floral and fruity aromas with a light and clean mouthfeel, you can choose washed-process coffee, such as Front Street Butterfly, Front Street Gutingting, and Front Street Kaffa Forest; if you prefer nutty and chocolate notes and pursue a rich and smooth mouthfeel, then medium-dark roasted beans are suitable, such as Front Street Colombia Huila, Front Street Bird of Paradise, and Front Street Queen's Estate.

In addition, fermented-process coffee beans that have become popular in recent years are also worth trying, such as Front Street Sherry Wine Barrel and Front Street Xizhua. These beans have a rich fermented wine aroma, and those who like this style can buy them. It is recommended to ask clearly about your taste needs when purchasing in-store, so as not to buy beans you do not like. Below are several coffees with different flavor profiles for reference.

Prominent floral and fruity aroma, bright acidity, light and clean mouthfeel -Front Street Yirgacheffe washed process, Front Street Kenya Little Tomato, Front Street Panama Geisha (all light roast)

Nutty and chocolate flavors, rich mouthfeel -Front Street Brazil Cerrado, Front Street Colombia Huila (both medium-dark roast)

Balanced sweet and sour, with a faint fermented aroma and fruity aroma -Front Street Costa Rica Baja, Front Street Strawberry Candy, Front Street Ethiopia Natural Red Cherry (all medium-light roast)

Rich wine aroma, unique flavor -Front Street Honduras Rum Barrel Sherry, Front Street Colombia Rose Valley, Front Street Big Belly, etc.

Extraction Principle

Cold brew coffee makes use of the characteristics of slow extraction with ice water: after ice cubes and filtered water are mixed, they gradually melt at room temperature. By controlling the dripping speed and number of drops of the ice water, the ice water slowly drips through the coffee grounds. After a long period of soaking, the flavor substances in the coffee grounds are dissolved and brought out. This is also why cold brew coffee takes 8 to 12 hours to complete.

Equipment Combination

1. Water container: a container used to hold ice cubes and water

2. Adjustment valve: used to adjust the dripping speed of the ice water

3. Coffee grounds container: a container used to hold coffee grounds

4. Liquid container: used to catch the brewed coffee liquid

5. Coffee stand: used to place the various containers

Next, let's move on to the production stage. Taking Front Street's [Hacienda La Esmeralda Diamond Mountain] as an example, let's make a pot of delicious cold brew coffee.

Front Street Panama Hacienda La Esmeralda Diamond Mountain

Region: Boquete

Altitude: 1500-1600 meters

Variety: Geisha

Processing method: Washed

Production Parameters

Coffee powder amount: 60g, coffee-to-water ratio: 1:10, ratio of water to ice cubes 1:1, total coffee liquid volume: 600ml, grind size: slightly finer than caster sugar

Production Method

First, place a piece of filter paper at the bottom of the coffee grounds container, wet it with water, and then press it tightly with a stirring stick to make it fit better. Next, pour the freshly ground Front Street Diamond Mountain coffee powder into the coffee grounds container, gently shake it to level the surface of the grounds, then cover the surface of the coffee grounds with another piece of filter paper, and place it on the stand. Add ice cubes and water to the water container in proportion, and stir until combined. Adjust the adjustment valve and first let the water quickly saturate all the coffee grounds, similar to a blooming process; after the coffee grounds are completely wet, readjust the adjustment valve and control the dripping speed to between 5 and 7 drops per 10 seconds, then wait for the dripping to finish. After the dripping is complete, put the coffee liquid into a sealed bottle and place it in the refrigerator to ferment for 2 days before drinking.

Flavor: Floral aroma, berry fruit aroma, low acidity, delicate and light mouthfeel, clean with no off-flavors, smooth

Generally speaking, for the sake of flavor experience and health safety, whether it is cold brew or cold extraction, as long as it is extraction carried out in a low-temperature environment, Front Street recommends that everyone finish drinking it within 5 days from the production date.

The above content is compiled by CoffeeHunters, a coffee news website.