Tacos de Carne Asada

Combine jalapeno, garlic, kosher salt, and 1 teaspoon black pepper in a mortar. Grind into a paste.

Pour lime juice, orange juice, and vinegar into a glass bottle or lidded container; add garlic mixture and shake well. Place steak in a shallow bowl and pour marinade over. Cover with plastic wrap and refrigerate until steak absorbs flavors, 4 to 6 hours.

Preheat grill for medium heat and lightly oil the grate.