He trained under Stephan Diedrich and opened Ozzie's Coffee & Tea in 1994, which the Kos Kaffe site calls one of Brooklyn's first specialty coffeehouses and microroasters. Kos Kaffe opened at 251 5th Avenue in 2012. Allon oversees all the coffee buying, and the beans are roasted in-house. Sarah Huck, whose cooking career runs from Savoy to Amy's Bread, wrote Campfire Cookery and Fruitful.
A hand-painted botanical mural of flowers and carrots covers the corner wall on Garfield Place. Inside, one long room has a counter along the back wall and bentwood chairs at small round tables, under tall windows with teal transom glass. The counter is topped with copper.
