Hot vindaloo-style lamb curry with cooling option

The curry recipe below is not in any way a replica of a vindaloo, famous in England for being one the spiciest curries, but it generates a similar level of intensity and fiery flavour. So, if you can handle the spice you might enjoy giving this a try, although using a cooler such as coconut yoghurt means you can lighten the heat if required.

Ingredients

400g small pieces lamb (ideally cut from a nice leg of lamb)
1 tbsp tandoori spice mix
1 tsp chili powder
1 tsp garam masala
1 onion
1 small garlic (puree together with the onion)
4 cardamon pods
3 cloves
1 tsp coriander seeds
1/2 tsp black pepper corns
1 inch of chopped ginger
2 red and 2 green chilies
1 tbsp of tomato puree
1 tbsp of chili powder
400ml lamb stock (or water)
1 tsp salt

Method

The night before cooking this curry rub in to tandoori spice mix, chili powder and garam masala.
Using a pestle and mortar lightly grind the cardamon, cloves, coriander seeds and black peppercorns.
Heat some oil in a saucepan and when hot add the mixture that has been grinded.
After 30 seconds add the chillies and ginger.
Stir well and after a minute add the pureed onion and garlic.
After three minutes add the lamb and cook over a medium heat for 5 minutes.
Add the tomato puree, table spoon of chili powder, salt and lamb stock and simmer for 30 minutes.

Mix in some coconut yoghurt to cool if necessary.