Fragrant pork & rice one-pot

Deliciously spiced pork meatballs and rice are simmered together in this stew, saving on washing-up

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4-6 good-quality sausages 1tbsp olive oil 1/2 onion, finely chopped 2 garlic cloves, crushed 2 tsp each ground cumin and coriander 140g long grain rice 850ml vegetable stock 400g can chopped tomatoes ½ small bunch coriander, leaves picked