A friend asked Qianjie, "Why is the coffee I brewed with dark roasted coffee beans still very thin?" "In general, dark roast coffee beans tend to be full-bodied, smooth and full-bodied. When tasting dark roast coffee, the taste experience is a very important part.
If the taste performance is relatively thin when brewing dark roast coffee, then it is likely that there are some problems with the parameters or techniques of hand pouring. Front Street has synthesized some of the problems that friends are more likely to have to share with you.
- Selection of bowls
Generally, for coffee beans that are dark roasted in brewing, Front Street will recommend that you use a kono filter cup. Because the guide ribs of the KONO filter are only distributed in the lower part, this design can well prolong the soaking and extraction time, and it is easier to brew out a mellow taste.
The use of a wash-type filter bowl such as V60 will focus on expressing the rich flavor of the coffee, and the performance in the taste is not very outstanding.
Qianjie summed up the relationship between the two, thinking that the V60 these fast-flowing filter cups will be mediocre in terms of taste, if you are using this kind of filter cup to roast coffee deeply, and the taste is not ideal. Then you can replace it with KONO Mingmen filter bowl and Kalita fan filter bowl, which are characterized by soaking and extraction, and it will be easier to flush out the thick and full taste.
- Powder-water ratio
The strength of the coffee also has a certain effect on the taste, if the concentration is too low, it may be more watery, and the higher the concentration, the fuller it will drink.
Generally, the ratio of brewed dark roasted coffee will be controlled between 1:13-15, and there is a high probability that the taste will be weak if it is higher than 1:15. Front Street has a ratio of 1:15, and the brewed dark roast coffee has a full-bodied and smooth taste. 
Of course, everyone doesn't feel the same way, but if you still feel thin when you brew coffee at a 1:15 ratio, you can switch to 1:13 or 1:14.
- Enough time
The reason for the thin taste of the coffee brewed by many friends is the lack of extraction time, simply put, the reason is that the coffee is coarsely ground and the water is flowing too quickly. In general, the caffeine extraction time is about 2 minutes is a reasonable time, if the extraction time is less than 1 minute and 30 seconds, then the taste of the coffee will be thin, and the time is more than 2 minutes and 30 seconds, the coffee will be fuller, but there may also be over-extraction of burnt bitterness.
- Water injection problems
When it comes to water injection, if you want to get a better taste out of your coffee, you can try these two suggestions: the first is to try to fill water around the circle, which is fuller than the large circle, because the risk of hitting the edge of the filter bowl is largely avoided by going around the small circle.
The second is to control the water level not to exceed the powder wall, if the follow-up water injection reaches the powder wall or does not inject the target amount of water, but at this time do not bite to fill the water volume, you can cut off the water first, and wait for the water level to drop slightly before filling the remaining water.
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