Whizz together the ingredients for the paste in a blender or food processor – add a splash of water if you need.
Cook the onion in a splash of water for about 5 mins until softened. Stir in the mince and cook for another 5 mins to brown. Add the paste, cook for 1 min, then pour in 100ml water. Bring to the boil and simmer for 10 mins. Add the peas then simmer for a further 5 mins.
Meanwhile, mix together the raita ingredients and season to taste. When the mince is cooked, season and stir through the fresh coriander. Serve with the raita and brown rice, if you like.