Fry the precooked bamboo shoot till crisp in a oil pan. Pressure-cook the cut spinach leaves, green chilies, garlic, onion, coriander powder, cumin seed powder and cool.
Grind the above pressure-cooked ingredients to a smooth paste. Take butter in a pan and add the ground paste and bring it to boil.
Then add the fried Bamboo Shoot and cook till done.