Name: Flank steak tacos with guacamole
Prep time: 45 min
Cook time: 8 min
Yield: 8
Cuisine: Mexican
Ingredients: For the steak; 1 (1-1.5kg) flank steak; 120ml tequila; 120ml freshly squeezed lime juice; 60ml olive oil; 1 tbsp ancho chili powder; Salt and black pepper; For the guacamole; 3 avocados; 1 small red onion, finely diced; 1 serrano pepper, minced with seeds; Small handful of roughly chopped coriander leaves, plus whole leaves for garnish; 30-45ml fresh lime juice; Salt; For the assembly; Corn tortillas; 1 head cos or romaine lettuce, coarsely shredded; 2 tomatoes, roughly chopped; 1 white onion, diced