Do hand-ground coffee beans need to be brewed?

Hand-grinding coffee beans is a traditional way of grinding coffee beans, which can help preserve the original flavor and aroma of coffee beans. However, whether hand-grinded coffee beans need to be boiled is a controversial issue.

Some people believe that coffee should be brewed immediately after grinding it into powder using a manual grinder. They believe that this preserves the freshness and taste of the coffee to the maximum extent. In fact, many professional tasters recommend brewing immediately after manual grinding for the best taste.

On the other hand, there are those who advocate pre-processing or "blooming" the coffee beans after they have been manually cracked. This process usually involves soaking the already cracked coffee powder in a small amount of boiling water and waiting for 30 seconds to 1 minute for it to fully degas. Then continue to add the remaining required amount of water to complete the brewing process.

Proponents of pre-treatment believe that it can further enhance the flavor and aroma and reduce bitterness and acidity. They believe that pre-treatment can help remove carbon dioxide from the coffee grounds, making the coffee more balanced and mellow.

However, whether or not to boil hand-ground coffee beans ultimately depends on personal taste preference. Some people like to brew hand-crushed coffee beans directly with boiling water to preserve their original flavor and acidity. Others prefer to change the taste of coffee through pre-processing.

In conclusion, whether or not you need to boil coffee beans after manually crushing them is a subjective question. If you want to preserve the original flavor and aroma as much as possible, you can choose to brew directly. If you want to further adjust the taste and reduce bitterness or sourness, you can try pre-processing methods.