Clean and slice the kovakkai to thin circles or thin strips lengthwise.
Heat kadai/frying pan with oil and temper with the mustard, cumin, curry leaves.
Add onion, if adding, to it and fry till golden brown.Add kovakkai,turmeric and salt.
Fry well adding more oil for 3 minutes. It should get half done by this time.
Then sprinkle sambar powder, mix and continue cooking till soft and changes colour.
Take care not to burn the kovakkai, adjust flame accordingly. If you want you can sprinkle water and cook covered too, but it tastes better when sauteed with more oil itself.
Video
Notes
If you want you can sprinkle water and cook covered too, but it tastes better when sauteed with more oil itself.