Step 1: Temper Spices and Sauté Onions

Heat 100ml of olive oil in a large pot over medium heat. Add the whole spices (cinnamon stick, green and black cardamom pods, cloves) and fry for about 30 seconds to flavor the oil. Add the sliced onions and cook for 15-20 minutes, stirring occasionally, until they are soft, golden, and caramelized.

Step 2: Add Beef and Build the Base

Add the diced beef to the pot and mix it with the onions. Then, add the tinned chopped tomatoes and the garlic & ginger paste. Stir everything together thoroughly.

Step 3: Incorporate Spices and Simmer

Add all the powdered spices (garam masala, coriander powder, turmeric, chili powder, cumin powder, smoked paprika) and the tomato puree. Mix well to coat the meat. Pour in three-quarters of the water (about 425ml), stir, and bring the curry to a simmer.

Step 4: First Simmering Stage

Cover the pot with a lid and let it simmer on a medium-low heat for 30 minutes. After 30 minutes, give it a stir, then add the chopped green chilies and the Naga paste. Stir again, replace the lid, and continue to simmer for another 30 minutes.

Step 5: Add Potatoes and Final Simmer

After a total of 1 hour of simmering, add the quartered potatoes, salt, the remaining water, and 1-2 tablespoons of white wine vinegar. Stir everything together, cover the pot, and simmer for another 20 minutes.

Step 6: Reduce and Finish (Bhuno)

Remove the lid and cook for a final 10 minutes on a slightly higher heat. This 'bhuno' stage will help to reduce the sauce and intensify the flavors. Stir in the fresh chopped coriander and the optional tablespoon of Greek yogurt.

Step 7: Serve and Garnish

The Naga Ghost Beef Vindaloo is now ready. Serve it hot in a bowl. For a professional presentation, garnish with more fresh coriander, a few slivers of fresh red chili, and a decorative lemon twist.

• Use waxy new potatoes as they hold their shape well during the long cooking process.

• Start with 1 tablespoon of vinegar and adjust to your taste preference at the end.

• For a healthier option, use olive oil, coconut oil, or avocado oil instead of seed oils.

• The Greek yogurt is optional and can be added at the end to add a little creaminess.

• Lamb can be used as a substitute for beef in this recipe.