Also known as hydromel or chouchenn, this is a very traditional Breton aperitif made with buckwheat honey (one third per volume), apple juice, water and yeast, and served chilled.
In the old days it was famous for being lethal. Makers used cider instead of juice and threw in a whole honeycomb, which likely still had bees (and their stingers hidden inside); their venom led to an extra buzz.
Image by Rhian