Chicken biryani

INGREDIENTS

• 300g basmati rice
• 25g butter
• 1 large onion , finely sliced
• 1 bay leaf
• 3 cardamom pods
• small cinnamon stick
• 1 tsp turmeric
• 4 skinless chicken breasts , cut into large chunks
• 4 tbsp curry paste (we used Patak's balti paste))
• 85g raisins
• 850ml chicken stock
• chopped coriander and toasted flaked almonds to serve