Heat ¼ cup oil in a pan, add ½ kg beef cubes and fry till golden brown.
Now add 2 tbsp ginger garlic paste and mix well.
In a bowl beat together 250 gm yogurt, 1 tsp crushed red pepper, 1 tsp chili powder, 1 tsp turmeric, 1 tbsp crushed coriander, salt to taste and ½ cup water.
Also add 2 chopped onion, 3 coarsley chopped tomatoes and salt to taste. Cover and cook for 15 – 20 minutes.
Now add 2 chopped green chilies, 1 red capsicum and 1 green capsicum cut into cubes.
Fry well on gihg flame.
Lastly add 2 tbsp coriander leaves and 1 tbsp butter. Dish it out and serve.