Chipotle Beef Tacos with Pickled Red Onions Recipe

Ingredients

• 500 g beef (flank steak or sirloin, thinly sliced)
• 2 tbsp olive oil
• 1 medium onion (finely chopped)
• 3 cloves garlic (minced)
• 2 chipotle peppers in adobo sauce (chopped)
• 2 tbsp adobo sauce (from the can)
• 1 tsp smoked paprika
• 1 tsp ground cumin
• 1 tsp chili powder
• 0 tsp 0.5 black pepper (freshly ground)
• 1 tsp salt (adjust to taste)
• 120 ml beef stock (low-sodium)
• 1 tbsp fresh lime juice
• 1 large red onion (thinly sliced)
• 120 ml apple cider vinegar
• 120 ml warm water
• 1 tbsp sugar
• 1 tsp salt
• 8 small corn tortillas (warmed)
• 60 g fresh cilantro leaves
• 1 medium avocado (sliced)
• 1 fresh lime (cut into wedges)