Cool down before grinding beans, coffee may be better?

For professional baristas, please follow the coffee workshop (Wechat official account cafe_style)

Many coffee lovers will make a lot of efforts for a good cup of coffee. However, new research suggests that there may be a simple way to upgrade the flavor of coffee: freeze coffee beans before grinding.

Researchers Maxwell Colonna-Dashwood and Christopher Hendon explore the effect of coffee bean temperature on post-grinding results when grinding baked beans, Fine Dining Lovers reported. They found that the coffee powder from frozen coffee beans was more consistent and could bring better flavor. "the taste will change as a result, and the particle size of coffee powder has a great effect on the extract. "Hendon said. Colonna-Dashwood added, "I believe we will see the impact of this study on coffee competitions around the world. "

Coffee powder with uniform particles can improve the extraction quality, which not only makes the coffee taste better, but also requires fewer beans for a cup of coffee, researchers say. "this discovery could have a great impact on the coffee industry, where everyone wants to make high-quality coffee drinks, use tools to achieve their goals, and are willing to try new methods. "Hendon said.

So how many degrees does the coffee bean have to drop to before it can be put into the grinder? The answer is that the colder the better. According to the study, coffee beans are cooled in three different ways: frozen (- 19 degrees Celsius), dry ice (- 79 degrees Celsius) and liquid nitrogen (- 196 degrees Celsius). The effect of the three cooling methods was better than that of room temperature coffee beans, and it was also found that the coffee beans with the lowest temperature performed best. "the performance of coffee beans is inversely proportional to temperature, and the difference between room temperature and-19 degrees coffee beans is the biggest. "

Just because the beans are cooled before grinding doesn't mean the coffee should be kept in the freezer all the time. Blue bottle coffee suggests that the moisture in the refrigerator can easily affect the flavor of coffee beans, so it is better to store them at room temperature. You might as well try to wait until you want to drink coffee before freezing and grinding.