Wash the colocasia leaves thoroughly. Trim the stems and remove any thick veins.
Use a pestle or rolling pin (belan) to gently flatten the thinner veins so the leaves become more pliable. Keep the leaves aside.
Wash and soak rice in water for 2–3 hours.
Heat a pan on low flame. Dry roast urad dal, coriander seeds, cumin seeds, methi seeds, and dry red chillies until fragrant. Let them cool completely.
In a mixer jar, add soaked rice, roasted spices, tamarind,jaggery, turmeric powder, and salt. Pour a little water and grind everything into a fine, thick paste.
Place one leaf with its tip pointing upward and spread the paste evenly on the back side.
Place the second leaf over it, this time with the tip pointing downward, and spread more paste.
Continue layering in this alternating direction (tip up, tip down), spreading paste between each leaf.
Use about 3–4 leaves per roll. Once layered, fold the sides of the leaves inward. Roll tightly into a cylindrical log.
Repeat this process with all the leaves; you will getapproximately 4 rolls from 13 leaves.
Place the rolls on a steamer plate. Steam for about 40 minutes, or until cooked through.
Remove and let them cool completely.
Once cool, cut each roll into thick slices.
Heat coconut oil in a pan over medium flame.
Shallow fry the slices on both sides until they turn golden brown.