Peaberry: (n.) a coffee bean that just likes to chill by itself.
Coffee cherries normally develop with two seeds inside them, shaped like the familiar half-moon coffee beans you know and love. About 95% percent of beans like to grow this way – all cuddled up face to face inside the coffee fruit. But the other 5% are called peaberries. They just want to chill alone in their cherry, growing nice and round to fill out the space where there should have been a roommate bean. Pour out some of whatever beans you have handy and look for a smallish one that’s rounded on both sides. That’s a peaberry!