Coffee afficionados are all about the AeroPress. It arguably brews a cup of coffee almost as quick as a Keurig maker but with infinitely better results. The coffee grounds and hot water are immersed together for 10 seconds and are then pressed through a microfilter (which takes 20 seconds). This method brews a richly flavored coffee or espresso but with less acidity and bitterness found with conventional coffeemakers.