Ingredients

2 tbls olive oil

2 tsp black mustard seeds

2 tsp tumeric

2 tsp ground cumin

2 long red chillies finely chopped

2 tbls grated fresh ginger

2 garlic cloves crushed

800g (1lb 12oz) tinned chopped tomatoes

100ml (3.5fl oz) malt vinegar

85g (3oz) brown sugar

a pinch of sea salt

Preparation

Heat the oil in a large saucepan over medium high heat. Add the mustard seeds, tumeric and cumin and cook, stirring for 3-4 minutes until fragrant. Add the chilli, ginger and garlic and cook further 2-3 minutes. Add the tomatoes, vinegar, sugar and salt and simmer, stirring occasionally for an hour until thick.