“What is a taco, anyway?” muses Rick over an upscale lobster taco at his white tablecloth restaurant, Topolobampo. “Is it crispy or soft? Grilled or griddled? Street food or taquería fare? Fast food or fine dining?” The answer is, “all of the above … and a whole lot more.” And to prove it, Rick heads to Mexico City, for a non-stop taco trek. It starts at Fishmart, a neighborhood seafood restaurant in trendy Condesa with the lobster tacos that inspired Rick’s Topolobampo version – succulent chunks of grilled lobster and black beans, wrapped in a warm corn tortilla.