Khutta ko achar / Spicy pork trotters Darjeeling style

Pork leg achar

1.78 kg of pork leg
200g of onion
180g of tomatoes
123g of garlic
20g of ginger
2tbs of chill powder
25g of dry chillies
4 red chillies
3tbs of mustard oil
1tbs of turmeric
1 lemon
10g of coriander
Salt for taste