Add the vegetable oil to a large pan on a medium heat. Add the diced onion and cook for 3-4 minutes or until the onions start to turn translucent.
Add the garlic and ginger paste and cook for 30 seconds.
Add Matt Cooper Bites Tandoori Lamb Mix (1.5tbsp) paprika, cumin and kashmiri chilli powder and cook for 30 seconds. Add a splash of water to stop the spices from burning.
Add the blended vine ripened tomatoes and cook for 2-3 minutes.
Add 150ml of the lamb stock and simmer for 2 minutes, stirring frequently. Repeat this step with another 150ml of stock.
Transfer to a blender and blitz until smooth.
Add the base back into a pan onto a low-medium. Add the remaining lamb stock if you the base is too thick. If using red food colouring, add 0.5 tsp mixed with 2 2 tsp of water and add.
Add the lamb tikka pieces and quartered vine ripened tomato (if using) and cook for 3-4 minutes. Add the kasuri methi, and garam masala.
Add the garnish and serve.