Most coffee beans are born twins.  Within each cherry on the coffee tree, two beans are grown side by side, resulting in the flat face of most beans.Peaberries, however, occur when only one of the two seeds is fertilized, growing on its own without anything to flatten it. 

As a result of heir independence, peaberry observes all the goodness.  Many coffee connoisseurs have suggested that each peaberry in infused with all the assets normally reserved for two beans.  These beans are most certainly unique and livelier cup with sweeter and bright taste, so giving special liquoring .