Aldo Graziani is one of the city’s most influential young sommeliers, educating Porteños on the finer points of wine via his radio program and TV appearances. His cozy but swank San Telmo restaurant draws a hip crowd, not unlike Graziani himself. The wine list is, unsurprisingly, massive. The food is mostly healthy Mediterranean-inspired items like fusilli with octopus and stuffed zucchini along with grilled meats and fish. Staff are thrilled to talk wine and help you find a special bottle. It's one of the few places that serves a brunch on Sundays.