Grilled sirloin soft tacos with guacamole & chipotle-tomato sauce recipe | Gourmet Traveller

Ingredients

• 2 sirloin steaks (about 3cm-thick), trimmed (see note)
• 10 corn tortillas
• To serve: coriander
• Cumin marinade
• 80 ml olive oil (1/3 cup)
• Juice of 1 lime
• 2 tbsp coarsely chopped coriander
• 2 garlic cloves, finely chopped
• 2 tsp cumin seeds, coarsely crushed
• 1 tsp black peppercorns, coarsely crushed
• Chipotle-tomato sauce
• 60 ml olive oil (¼ cup)
• 1 small onion, finely diced
• 400 gm canned Italian chopped tomatoes
• 2 tbsp chipotle chillies in adobo (see note)
• Guacamole
• 2 avocados
• 1 Roma tomato, seeds removed, coarsely chopped
• ½ small Spanish onion, finely chopped
• ¼ cup (firmly packed) coarsely chopped coriander
• 1 small red chilli, seeds removed, finely chopped