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• Ask the butcher to dress the mutton leg properly while purchasing.
• The mutton leg aka mutton raan should have dip slits on it.
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Marination stage 1 (before 48 hours of making the roast)

• Wash and clean the mutton led and pat dry it.
• The mutton leg should be at room temperature.
• Dry roast Dry Red Chilli, Black Cardamom, Star Anise, Green Cardamom, Ajwain, Cumin Seed, Mace, White Pepper, Cinnamon stick, and also Coriander Seed.
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• Keep the flame low while dry roasting the spices.
• Switch the flame off when the spices emit an aroma.
• Wait till the temperature drops completely.
• Now make a coarse powder of the spices.
• Mix Ginger and garlic paste and also salt with this mixture to make a semi-thick paste.
• Add Mustard oil to this mixture and mix well.
• Apply this mixture to the mutton raan properly, especially within the slits. 
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• Once done, cover the mutton leg with cling film or plastic wrap and keep it in the freezer (not in the refrigerator) for at least  24 hours. 

Marination stage 2 (before 8 hours of roasting)

• You need to take this out from the refrigerator at least 1 hour before roasting. 
• Mix Plain Yogurt, Turmeric Powder, Cumin Powder, Coriander Powder, Red Chili Powder, Garam Masala Powder, Sugar, Salt, and Mustard Oil to make a thick paste.
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• Now apply half of the marinade to the mutton leg and keep it in the freezer for 8 hours.
• Do not forget to apply the marinade within the slits.
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• Keep the remaining marinade in the fridge.

Before Roasting the Mutton Leg

• Take the mutton leg out of the freezer for at least 1 hour before roasting.
• Take out the remaining marinade as well.
• Add 1 tablespoon Ginger Paste and  1 tablespoon Garlic Paste to it.
• Add 1 Cup of Onion Crisp aka Piyaj Beresta to this mixture as well.
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• Apply this mixture to the marinated Mutton Leg and keep it as it is at room temperature for at least 1 hour (preferably 2 hours) before roasting.
• Do not forget to apply the marinade within the slits.
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• Meanwhile, cut 8 onions and 8 tomatoes into four pieces each.
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• Make a sturdy oven-safe tray ready.
• Place the mutton leg in the tray.
• Fill the sides with chopped onion as well as tomatoes.
• Pour the remaining marinade on top of the mutton.
• Melt 50ml Ghee and pour it over the mutton.

Roasting the Mutton Leg

• Preheat the oven to 140 degrees C for 15 minutes.
• Cover the mutton with aluminum foil.
• Roast it after keeping the cover on at the 140 degrees C for 2.5 hours.
• Remove the foil after 2.5 hours and keep roasting for 30 minutes at 140 degrees C.
• Check with a toothpick whether the same is coming out clean or not; if yes, the mutton raan is fully roasted, if not keep roasting for a few more minutes.
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• Once done, switch the oven off.
• Take the roasted mutton raan out after 15 minutes.
• Be ready with a Steak Knife while serving the Roasted Mutton Raan!
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