Blooming your coffee allows carbon dioxide to be released from the beans which will give you a better flavor and better extraction. It’s a step that should not be skipped in your brewing process!
Brewing freshly roasted coffee grounds creates a frothy head much like a beer’s. Whereas the head is desirable in beer and enhances flavor, the head that develops during coffee brewing interferes with extraction and negatively affects flavor.
To best brew fresh coffee, the head should first be dissipated via blooming.