Okra - 1 lb, chopped in small rounds (I used a packed of Shana Bhindi, frozen, sliced)
Tamarind - a lemon size
Onion - 1, chopped fine
Red chillies - 2 (if it's the hot variety, 3 if you have milder red chillies)
Garlic - 4-5 pods (sliced, if big)
Fenugreek/Methi seeds - 1/4 tsp
Mustard seeds - 1/4 tsp
Cummin seeds - 1/2 tsp
Turmeric powder - 1/4 tsp
Asafoetida - 1/4 tsp or lesser, say a pinch
Curry leaves - a sprig, chopped
Oil - 1 tbsp
Salt, to taste
Edited to add: If it's fresh okra, I saute the slices after onion, so that the okra doesn't get very sticky. Since the above used are frozen ones, it is added at the last few minutes; else it gets overcooked.
Thanks Satish for pointing out the missing red chillies.