It's May and summer is here. In the hot summer in Guangzhou, even if it rains, it is still so sweltering. Without a cool drink, I really don’t have the courage to live in this furnace-like Guangzhou. So recently, many friends have come to the front street store to buy beans suitable for making iced coffee. Many of them want iced coffee. At this time, the question arises, should it be iced drip coffee, cold brew coffee or iced Pour over(V60) coffee?
Then, another question arises: Are there any differences between these three coffees? Next, Front Street Coffee will share with you the differences between these three types of coffee.
First of all, we all know that these three coffees have one thing in common, that is, the temperature is very low. First of all, you need to know a basic concept. Coffee making is the process of extracting some of the substances in coffee. But if this part of the substance is not extracted completely, it is called "under-extraction." If you continue to extract after the extraction is complete, unnecessary substances will be extracted, which is called "over-extraction". As we all know, coffee extraction is closely related to temperature and time. The high temperature of hot water will accelerate the movement of each component: among them, the sour components move the fastest; while the bitter components move the slowest. However, as the temperature rises, the total amount of taste increases, and more bitter components reach the surface. On the contrary, the lower the temperature, the longer it takes to extract a certain amount of flavor.
Ice drip coffee
As the name suggests, ice-drip coffee is filled with ice in a specific container, allowing the ice to naturally melt into water, and at the same time, the water drips into the coffee powder drop by drop. It takes a long time to make an ice-drip coffee. The ice-drip coffee at FrontStreet Coffee stores usually takes 6 to 8 hours to complete the extraction. After the extraction is completed, the coffee liquid needs to be chilled in the refrigerator for 12 hours to allow the coffee liquid to ferment during the cooling period.
The biggest advantage of iced coffee is that it highlights the pure taste and fermented aroma of coffee, so it is very suitable for making medium-roasted single-origin beans that are sun-dried and honey-treated. Front Street Blackberry, Front Street Mozart, and Front Street Hija are the first choices. The iced coffee they make will have the sweet aroma of fruit wine, raisins, and peaches.
[How to make Front Street Iced Coffee]
The coffee powder cup holds 60 grams of coffee powder and extracts 600 ml of coffee liquid, with a powder-to-liquid ratio of 1:10. Regarding the choice of grinding degree, because the water temperature of the contact powder is lower than that of ordinary Pour over(V60) coffee, a slightly finer scale will be chosen than Pour over(V60) coffee. Judging by the No. 20 sieve, the sieving rate will be around 85%. The mixing ratio of ice and water is roughly 1:1, and the throttle valve is controlled at a flow rate of 7 drops/10 seconds. And lay a piece of moist filter paper on the powder bed for more even extraction. The entire extraction time lasts approximately 6-8 hours. After the extraction is completed, the coffee liquid will be bottled and placed in the refrigerator to chill for 12 hours before drinking.
cold brew coffee
Cold brew coffee is very simple and convenient. Simply put, the coffee powder is put into clean water, soaked and extracted through low-temperature refrigeration for a long time, and then the coffee powder in the coffee powder and coffee liquid mixture is filtered through filter paper, and finally the clean coffee liquid is obtained.
When making cold brew coffee, it is best to buy refreshing medium-light roasted coffee beans such as Front Street Guo Dingding, Front Street Butterfly, and Front Street Oiran. Because they have a short roasting time, low bitterness, and bright acidity, the cold brew produced has the aroma of tea, white flowers, honey, etc.
[How to make Front Street Cold Brew Coffee]
Based on 50 grams of coffee powder, when choosing the grinding degree, because the water temperature in contact with the coffee powder is lower than that of ordinary Pour over(V60) coffee, a slightly finer scale is selected than that of Pour over(V60) coffee, that is, the pass rate of the No. 20 standard sieve is 85%. Put the coffee powder into a glass bottle, then add 400 ml of room temperature water and 200 grams of hard ice cubes (a total of 600 grams of ice-water mixture) into the bottle. The ratio of powder to water is 1:12. Then use a stirring stick to stir the coffee powder and water evenly, seal it and place it in the refrigerator to refrigerate.
Place it in the refrigerator for 8 to 24 hours. Use filter paper to filter out the coffee grounds to obtain clean coffee liquid. Then use a clean sealed bottle to put the coffee liquid in and refrigerate it for about 4 hours before drinking.
Iced Pour over(V60) coffee
Iced Pour over(V60) coffee is also called Japanese-style iced Pour over(V60) coffee. It can be simply understood that normal brewed coffee is diluted and cooled with ice cubes. In order to avoid ice cubes diluting the taste of the coffee, the iced Pour over(V60) coffee will reduce the ratio of powder to water when brewing, use less water to brew a cup of coffee liquid with a higher concentration, and then add ice cubes to cool it.
If you want to make delicious iced hand brew at home, buy Front Street Strawberry Candy, Front Street Little Tomato, Front Street Big Navel, and Front Street Grana Geisha. Because they are rich in floral precursors, they not only have their own fragrant tonality after baking, but also have a unique sweet and sour flavor.
[How to make Front Street iced Pour over(V60) coffee]
Taking 15 grams of coffee powder as an example, the grinding degree is finer than hot Pour over(V60) coffee. For example, the grinding degree of light roasted coffee is 85% through the No. 20 sieve. The ratio of coffee powder to water to ice is 1:10:5. The water temperature is the same as ordinary hot hand brewing. The water temperature for light roasted coffee is 90℃~93℃, and the water temperature for medium roasted coffee is 87℃~89℃. The brewing method of iced Pour over(V60) coffee is the same as that of hot Pour over(V60) coffee, using a three-stage extraction method. After brewing, shake or stir the filter cup to allow the ice cubes to fully contact the coffee liquid, quickly cool down, and maintain a consistent concentration.
The difference between iced drip coffee, cold brew coffee and iced pour-over coffee
Iced Pour over(V60) coffee essentially extracts the coffee substances in the middle and front portion of the coffee, and then adds an equal proportion of ice cubes to cool and dilute it to the appropriate temperature concentration. Therefore, the taste will be clean and refreshing, and it is easy to highlight the main flavor of coffee.
Because ice-drip coffee is extracted with ice water for a long time, more small molecular substances (such as floral aroma, acid) are extracted, while large molecular substances (such as the bitterness of tannins) are more difficult to extract. In addition, after the production is completed, it will be put into bottles and fermented at low temperature for 12 hours, so the flavor will have a clear sense of fermentation and the sweet smell of the coffee beans themselves, and the taste will be cool and delicious.
The liquid displayed by cold brew coffee is not as clear as ice-drip coffee, and a thin layer of oil will float on the surface. Compared with ice-drip coffee, the flavor and taste will be slightly thicker and more balanced. Compared with hot extraction, sweetness and bitterness are less easily felt, but sourness is more easily felt. Because the temperature is low, the flavor lasts longer.
Are cold brew and iced drip coffee high in caffeine?
Recently, a friend asked Front Street about caffeine. Do cold brew coffee and iced drip coffee have high caffeine content? How much caffeine is in espresso and instant coffee? How much coffee can I drink each day without risking my health?
Many people think that the caffeine content of ice-drip coffee is low because the lower the water temperature, the less easily the caffeine dissolves (the lowest temperature at which caffeine dissolves is above 80 degrees Celsius). However, the low amount of caffeine extracted by cold water cannot be underestimated over a long period of extraction. Depending on the coffee beans used, the water drip interval, and the total extraction time, the caffeine content will also vary greatly. As for the content of some packaged instant coffee sold on the market, you can refer to the packaging bag. As for how much drinking will endanger your health, an authoritative organization stated that the safe daily caffeine intake for adults should be 400 mg. On this basis, it also depends on the user's sensitivity to caffeine.
You can now buy the above coffee beans online at the Taobao store “FrontStreet Coffee” (前街咖啡). FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou, China, and its Guangzhou retail shop sells coffee beans only. The shop carries dozens of coffee beans from different origins around the world, including carefully selected single-origin beans for V60 pour-over and espresso. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers.
The FrontStreet 2013 Yunnan coffee beans sold in the store come from the Typica variety grown at FrontStreet Coffee’s own plantation in Yunnan. The name comes from the year the brand and the plantation were founded. You can buy these beans from China’s Yunnan origin at the Guangzhou shop and at FrontStreet’s Taobao store.
FrontStreet coffee beans are freshly roasted within 5 days and deliver consistently excellent quality and great value. Orders placed before 17:00 are shipped the same day, and most areas within Guangdong Province receive them the next day.
FrontStreet Coffee Taobao store: https://qianjiecoffee.taobao.com
Or search for “前街咖啡” (FrontStreet Coffee) on Taobao
Important Notice: FrontStreet Coffee has moved to a new address: 315, Donghua East Road, Guangzhou (coffee beans only)
Tel: 020 38364473
