© Ross Todd Buenos Aires's San Telmo market bustles on Sundays with shoppers scouting vintage finds. After wandering the stalls, my friends and I were led by our noses to the corner of México and Defensa, where locals were queuing up for lunch at grills set up in the gated parking lot. We ordered some massive choripanes (sausage sandwiches) and vacipanes (steak sandwiches). I was a little nervous about the sausage—it had clearly been hanging from a tree branch, unrefrigerated, all day—but in the end, its subtle spiciness helped it win out over the chimichurri-covered steak. If only I could get a similar lunch in midtown New York for $2.50!