There is some chutneys’ made traditionally in all homes in Dharwad, my home town. the same recipe can be used for the ridge gourds skin, Amma once used red pumpkin’s skin.
3-4 tomatoes roughly chopped
1 tsp urid dal
3 green chillies (as per taste)
½ grated fresh coconut
Salt to taste
Heat oil add mustard when they splutter
Add hing, urid dal till it changes colour.
Add green chilies, curry leaves, til.
Add tomatoes and lightly roast.
Switch off the gas add coriander leaves, coconut and cool.
Grind in the mixer with salt.
Serve with dosa.