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Guacamole Tacos with Tomatillo and Steak Sauce
4 Anaheim chiles, seeded
4 dried chiles de arbol
1 pound tomatillos (about 10), husked and rinsed
4 cups water, divided
2 garlic cloves, peeled
1/4 teaspoon aniseed
1/4 teaspoon dried oregano
2 tablespoons olive oil
1 pound skirt steak, cut into 1/3-inch cubes
3 large avocados, halved, pitted
1/2 cups (packed) finely chopped fresh cilantro
1 teaspoon salt
12 small flour tortillas, softened
Place all chiles in medium saucepan, then add tomatillos and 3 cups water. Cover and boil until chiles and tomatillos are soft, stirring occasionally, about 10 minutes. Cool and drain.
Combine tomatillo mixture, garlic, aniseed, and oregano in processor; blend until smooth. Strain, discarding solids.
Wipe same saucepan clean. Add 2 tablespoons olive oil; heat over medium-high heat. Add strained sauce, simmer 5 minutes, then add 1 cup water. Bring to boil. Add chopped steak; reduce heat to medium-low and cook until sauce lightly coats back of spoon, adding more water by teaspoonfuls if sauce is too thick (consistency is similar to thin Bolognese); about 15 minutes. Season to taste with salt.
Using spoon, scoop out avocado flesh and place in medium bowl. Add cilantro, onion, and 1 teaspoon salt; coarsely mash with fork. Place 2 tablespoons guacamole in center of each tortilla; roll up. Place on plate, seam side down. Pour warm meat sauce over tacos to cover and serve.