Pork & black bean tacos - Good Food Middle East

Ingredients

• 200g leftover pork, cut into strips
• 2 limes, halved
• 1 ½ tbsp olive oil
• 1 tsp cumin seeds
• 2 small red onions, finely chopped
• 2 garlic cloves, crushed
• ½ small pack coriander, leaves picked and stalks finely chopped
• 400g can black beans, drained (reserve the juice)
• 1 avocado
• 4 corn tortillas