Posolar Khar (Assamese Banana Stem Khar)

Ingredients – 1 medium posola (banana stem), finely chopped 1 medium potato, cut into small thin pieces 1 medium onion, sliced thinly 3 slit green chillies 1 tbsp ginger garlic paste 2 bay leaves 1 dry red chilli 1/4 cup small black chickpeas boiled with a little salt Kolkhar – 4 tbsp 1 tbsp mustard…