That partly explains how it became a unique symbol of the Jewish autumn holiday of Sukkot, which this year begins sundown Oct. 12. It's most notably used in an intricate blessing, during which it is held (along with a bundle of palm fronds and willow branches, known as a lulav) and shaken toward the north, south, east, west, up and down to symbolize the belief that God is everywhere.
Some Jews will spend days in search of the finest etrog, traipsing through markets with a magnifying glass in hand, inspecting them for symmetrical shape, color, texture and, above all, the presence of a pittam, or stem. A perfect etrog may cost $25 or more.
But after the seven days of Sukkot, there's not much demand for the fruit. Which means that, in the markets of Israel, all those never-selected "imperfect" etrogs simply go to waste.
"They're literally worthless," said Cohen. That's how he got the idea to brew a beer with etrogs.
A former accountant from New Jersey, Cohen opened his brewpub, one of the few in Israel, in 2006 with the goal of making beer with ingredients unique to that part of the world. He brews a stout with carob from North Africa and an ale with pomegranate, a symbol of Rosh Hashanah. In December, he brews a cherry vanilla stout that tastes like sufganiyot, those jelly doughnuts enjoyed during Hanukkah.
From that perspective, etrog beer is a natural.
He asks his friends to donate theirs after the holidays, and he collects still more from a local farmer. "I told him I'd take them off his hands," said Cohen. "And he said, 'Only if you promise me a few bottles.' So we had a deal."