Boil the rice following pack instructions. Meanwhile, tip the sweetcorn into a bowl with the ginger and garlic, and blitz with a hand blender until smooth and creamy.

Put the mustard seeds in a large pan and warm briefly over a low heat until they start to pop. Tip in the garam masala and sweetcorn mixture, and mix with 350ml boiling water, the bouillon, chilli (if using) and cinnamon stick. Bring to the boil, then lower the heat to medium. Add the beans and tomatoes, then cover the pan and cook for 6 mins.

Add the spinach and stir until beginning to wilt, then top with the fish, spoon over some sauce or gently push it under, then cover and cook 5-8 mins more until the fish is just cooked.

Carefully lift the fish from the pan and stir the coconut yogurt and coriander into the curry. Serve with the rice and extra coriander scattered over.