Family meals: Mild chicken curry

INGREDIENTS

• 1-1½ tsp coconut oil (we used Fushi) or sunflower oil
• 1 large onion , finely chopped
• 2 fat garlic cloves , crushed
• 1cm fresh ginger , grated or finely chopped
• 1 tsp ground coriander
• 1 tsp yellow mustard seeds
• 1 tsp garam masala
• ½ tsp ground cumin
• 1 x 500g pack chicken pieces (thighs and drumsticks), or thighs
• 1 chicken stock cube
• 1 cinnamon stick
• 250g Greek yogurt , at room temperature
• 2 tbsp sultanas
• handful chopped coriander , to serve (optional)