RECIPE 👉 https://www.rickbayless.com/recipe/ch...

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There is no way I could amass a collection of the most essential Mexican recipes without including grilled skirt steak tacos. They are simply my favorite—beefy, juicy slices of smoky meat on a warm tortilla, a little seasoned mashed avocado, a splash of salsa, a squeeze of lime, maybe some grilled knob onions on the side to provide the counterpoint of texture and flavor.

The first thing to know about skirt steak is that there are two kinds, inner skirt and outer skirt. While inner might sound more protected, more tender, it’s the reverse: the inner skirt steak is thicker, tougher and in most places less expensive. The butchers at the Mexican grocery near my house butterfly inner skirt steak and then run it through a tenderizing machine before they sell it. Outer skirt steak, on the other hand, is thinner, more tender and even beefier—no need for butterflying or tenderizing.

Most Mexican cooks make simple marinades for the meat they grill and chop for tacos. Often, it’s just salt. Some add fresh lime plus a little garlic, perhaps along with the beloved northern Mexican triumvirate of black pepper, oregano and cumin. And still others play the umami card, enhancing the meat with salsa inglesa (Worcestershire), soy or a little Knorr Suiza powdered bouillon. For this recipe, I’ve decided to go all the way.

Because this dish is most famous from northern Mexico (but beloved everywhere), it welcomes flour as well as corn tortillas.