Lamb & Eggplant Tikka Masala

for the lamb

• 1 lb good quality lamb cut in large pieces
• 1/2 cup Greek yogurt
• 1 tsp Turmeric
• 1 tsp Coriander
• 1 tsp cumin
• 1 tsp garam masala
• 1 tsp salt
• 2 cloves garlic minced
• 1 Tbsp fresh grated ginger

for the sauce:

• 3 Tbsp olive oil
• 1 medium white or yellow onion thinly sliced
• 2 Tbsp tomato paste
• 10 cardamom pods crushed
• 4 small dried hot chilies crushed, seeds and all (adjust to suit your taste)
• 2 cloves garlic minced
• 1 Tbsp fresh grated ginger
• 1 tsp Turmeric
• 1 tsp cumin
• 1 tsp Coriander
• 1 tsp tsp garam masala
• 1 tsp salt
• 28 oz can of good quality crushed tomatoes you can use whole tomatoes and crush them yourself
• 1 medium eggplant
• 1 cup full fat coconut milk
• 2 Tbsp of chopped fresh cilantro plus more for garnish