Cut the Lady's finger (vendakka) vertically into two and cut each vertical pieces into thinner verical ones and cut the thinner ones into 2 or 3 horizontal pieces depends on the length of the ladies finger.(Vendakka neelathil ariyuka).
Cut green chillies and garlic into small ones (Thari thari aayi ariyuka)
Keep vendakka, greenchillies, garlic, thengappeera, curry leaves and a pinch of turmeric powder in a plate.
Heat oil in a sauce pan.
When oil becomes hot add mustard.
When the mustard splutters, add all the ingredients in plate to the sauce pan.
Keep in a very low flame and cover it with a lid.Don`t add water.
When vendakka is half cooked,add salt as needed and add 3/4 table spoon of vinegar to it and continue in the low flame and covered till the vendakka is completely cooked.