Zak Stern raises Alpine goats in Little Haiti. He wears suspenders, is fond of tweed trousers, and enjoys listening to Taylor Swift. He once apprenticed for five years under bread- and cheese-makers across Europe. Now he runs a closed-door operation that supplies organic sourdoughs to some of the city's top restaurants, including Michy's and Oak Tavern. The loaves ($6), offered in varieties such as olive and za'atar or plum, fennel, and rye, have thick, chewy crusts and complex, slightly bitter interiors. So when Zak shows up at a farmers' market to sell his bread, lines form immediately. Loaves sell out within minutes. Maybe it's the goat's milk. Or perhaps it's all the T-Swift. Whatever the reason, Zak Stern is the best — and perhaps most interesting — baker in town.