If you tend to load your automatic coffee machine the night before and wake up to a ready cup, the concept of "blooming" your coffee may not be one you've ever encountered. If, on the other hand, you're someone who's been known to tinker with the finer points of their coffee-brewing routine, chances are you're familiar with the process—pre-wetting the grounds for pourover coffee and letting them sit briefly before adding the remaining water. For anyone who's committed to making a better cup of pourover coffee, it's important to know about. Or is it? Why do we bloom coffee, and is it really necessary?