Chicken and white bean chilli

• 8 chicken thighs, skinless and boneless
• 2l chicken stock
• 2 tbsp of vegetable oil
• 1 onion, diced
• 1 green pepper, sliced
• 4 garlic cloves, sliced
• 1 jalapeño, sliced
• 1 tsp dried oregano
• 1 pinch of cumin seeds
• 350g of cannellini beans, soaked in cold water overnight (or 2 tins of cannellini beans, drained)
• 1 lime, juiced
• salt
• pepper

To garnish

• 1 handful of coriander leaves, roughly chopped
• 2 spring onions, sliced
• 4 tbsp of sour cream
• 100g of tortilla chips, crushed