Rinse and pat dry the okra well with a kitchen towel. This helps to make sure that the okra does not get too slimy when cooking.
Slice the okra into rounds of ¼ inch thickness.
Heat oil in a saute pan over medium high heat. The high heat is necessary to roast the okra well without any slime.
Add the mustard seeds and pop them. Toss in the curry leaves and the sliced okra.
Let the okra roast in the oil without being disturbed for a couple of minutes. Gently move around the okra so both sides of the okra and all of the okra slices get cooked well.
Once the okra starts browning a little around the edges and you no longer see strands of slime when you move the okra around or see very little of it, add the spices and salt and mix well.
Reduce heat to medium and let it cook for a few more minutes till the spices are not raw anymore and the okra is cooked through.
Notes
You can add grated coconut at the end or some diced red onions before you add the okra for a variation on this dish.