Wash and Peel the Ridge Gourd, Turai or Peerkangai.
Roughly chop the Peerkangai into pieces (easy to grind)
Heat a pan, add oil, chana Dal, Urad dal and Whole red chillies.
Saute until the dals have browned a bit and the chillies have crisped up
Add the chopped peerkangai pieces to the pan, mix well. Add a tblsp of water so that the bottom of the pan doesn't burn and the peerkangai thol softens a bit.
Once the Peerkangai has softened a bit, switch off the flame, add grated coconut, tamarind and jaggery. Keep aside for cooling.
Once the ingredients have cooled, transfer to a chutney jar, add salt to taste and grind it into a chutney consistency. You can add water accordingly. Keep it slightly thick in consistency.
Once the chutney has ground, prepare for tempering by heating a small pan with some oil.
Add some mustard seeds, Urad dal and whole red chillies. Once the mustard crackles add the tempering to the chutney, mix well and serve immediately.