“Nobody ever asks about that!” says Daniel Sullivan, owner of Shipwreck Honey in Seattle, his gleaming impishly behind black plastic-frame glasses. I beam with equal enthusiasm; I’ve been on a quest ...

Propolis, sometimes called bee glue, is an important material for honeybee hives. It’s a complex mixture of plant sap, beeswax, and honeybees’ natural enzymes — and it plays an important role in ...