Vidalias are the best known of the sweet onions, but there are plenty of other options like Walla Walla, Maui, Texas 1015, and Oso Sweet. Most domestic sweet onions are available in the spring, but Osos, from Chile, are available in the winter.
El Fenix Original Tacos The earliest Tex-Mex crispy tacos were filled first and then fried. Some taco stands sealed the taco with a toothpick, but in this recipe, the filling is sticky enough to hold the tortilla together. The trick here is to stuff the tortillas and then drop them immediately into the hot oil. If you hesitate for even a few seconds, the tortilla will begin to crack along the bottom.