Queso Fresco is a mild and crumbly Mexican cheese that is often used as a topping for various dishes, including Tacos al Carbon. It adds a creamy and slightly salty flavor to the tacos. To use Queso Fresco as a topping for Tacos al Carbon, simply crumble the cheese over the assembled tacos. You can also sprinkle some chopped cilantro on top for added freshness. Queso Fresco can be found in most grocery stores or specialty Mexican markets. If you can't find Queso Fresco, you can substitute it with other mild and crumbly cheeses such as feta or farmer's cheese. Store any leftover Queso Fresco in the refrigerator, tightly wrapped in plastic wrap or stored in an airtight container. It will keep for about a week. Enjoy the combination of smoky grilled meat, creamy guacamole, fresh pico de gallo, and tangy queso fresco in your Tacos al Carbon!