Beef with Butterbeans

Ingredients

500g lean stewing beef, cut into large chunks

2 onions, chopped

800g (2 cans) chopped tomatoes

1 tsp sweet paprika

1 tsp ground cumin

1 tsp mild chilli powder

2 tbsp caster sugar

400g tin butter beans, rinsed and drained

2 tbsp ed or white wine vinegar