Bloom

Detailed Explanation:
When coffee is roasted, gases get trapped inside the beans. 

Grinding them brings these gases closer to the surface. 

The bloom happens when hot water causes those gases to expand, creating bubbles at the top.

 Letting your coffee bloom for 30–45 seconds before adding more water allows the grounds to degas and saturate fully. 

This leads to more even extraction and a balanced brew. 

If your coffee doesn’t bloom, it might be stale, a quick sign your beans have lost their freshness.