Today marks Taco Day, a day which any self-respecting food enthusiast would look forward to celebrating because, when done right, this Mexican gift to gastronomy is the perfect vessel for a seemingly endless variety of intense flavors. While South Florida is known more as a hub for Cuban cuisine than Mexican, our little slice of paradise is not completely devoid of authentic Mexican cuisine if you know where to look for it and what to look for.  First of all, like most ethnic cuisines, you won’t really find authentic Mexican fare in a conventionally chic setting (with one or two exceptions).  Second, if you see a hard taco shell or commercial flour tortilla, chances are that what you’re eating isn’t exactly authentic.  Most importantly, however, is recognizing a good selection of fillings, such as carnitas (pork confit), al pastor (achiote rubbed pork and pineapple), chorizo (mexican sausage), cochinita pibil (Yucatan-style braised pork), tongue, tripe, and the occasional nopal (cactus paddle) and huitlacoche (corn fungus).  Being that Miami is a melting pot of Hispanic cultures, it’s also important to recognize the difference between Mexican tacos and Central American tacos, which can be very different.  So, without further ado, here are my picks for tacos in South Florida: