With the "Cantina Tacos," you've got a choice of three different types of meat (beef, chicken, or pork carnitas), with diced onion and cilantro on two corn tortillas. They add a slice of lime in the tin foil, just in case--separated from the tacos, so the tortillas don't get mushy. And you can mix and match the meats, which is cool--unlike places like Boston Market, where you have to buy three of one type of slider.
First up was the beef (160 calories). I opened the taco up, expecting to find the typical meat paste--but to my surprise, it had strips of real beef. They weren't exactly juicy, and the beef wasn't of a particularly high quality, but it was significantly better than the regular ground beef. It was just slightly spiced, with what tasted like generic fajita spice powder. The cilantro added more flavor, and the onions added bite and texture, but didn't overpower the total package.
Taco Bell 'Cantina' Tacos: A Seriously Good Review