Pink peppercorns are not actually related to black peppercorns, but get their name from the similarities in look and their peppery flavor. Pink peppercorns are light and delicate. They crush very easily and are almost hollow. Pink peppercorns are from the genus Piper which is related to the cashew family. For this reason, you should use caution when using pink peppercorns around any person who has an allergy to nuts.