Wash and cut Tindora (Dondakaye) in desired shape and size (long, circles, 1/2" pieces).
Dondakaye by itself takes a long time to fry, by cooking in pressure cooker with water and salt, reduces cooking time by half. Cook and drain water.
Take 3 -4 tsp of oil in a skillet and heat it. Once oil is hot add the chopped vegetable and fry for a few minutes on medium flame. If desired add chopped onions and fry for a few more minutes and add salt.
Once the vegetables are crunchy or completely cooked add red chili powder and sometimes as in the case of dondakaye add a tsp of besan, fry for a few minutes and remove from flame. Serve hot with rice when the vegetable is crispy and crunchy.
Or completely fry the vegetable; do not add red chili powder. Just before serving add a tsp of oil and fry on high flame and serve hot.