Chena pulissery (yam cooked in coconut and curd gravy)

Ingredients

• Yam ? 1 cup cut into bite sized pieces
• Grated coconut ? 1- 1 1/2 cups
• Curd (sour) ? 1 cup (depending on sourness of the curd. For less sour ones you will have to add more)
• Cumin seeds ? 1/2 tsp
• Peppercorns ? 1/4 tsp
• Green chilly ? 1 or 2 (as per need)
• Turmeric powder ? 1/2 tsp
• Salt
• Oil ? 1 tbsp
• Mustard seeds ? 1/2 tsp
• Dry red chillies ? 1-2 halved
• Curry leaves ? a handful