Banana stem stew

Name: Banana stem stew
Ingredients: 2 cups diced banana stem; 1 cup grated coconut (Frozen or fresh); 2 tablespoons cumin; 2-4 dried arbol chile; 1/4 teaspoon turmeric; 2 tablespoons oil; 1 sprig curry leaves torn; 1 teaspoon mustard seeds; 1 teaspoon split urad dal; 1 pinch asafetida; 2-3 cups water; Salt to taste