For preparing Kumbalanga Moru Curry, first cut winter melon into medium sized pieces.
Cook it with pepper powder, turmeric powder, red chilly powder, salt and water.
Grind grated coconut with shallots, cumin seeds, curry leaves and green chillies.
Add the ground coconut mixture to the cooked winter melon. Allow it to cook in a low flame.
Beat the yogurt and add it to the cooked winter melon and stir well to avoid lumping.
Heat oil in a pan, splutter mustard seeds, dry chilly and fenugreek seeds. Add it to the curry.