To a pan, add butter and spinach stir fry for few seconds. Add into a blender and grind to a fine puree. You may also add 1/4 cup water to puree.
To the same pan, add butter, add cumin seed. Let it sizzle for a few seconds
Meanwhile, grind dry red chillies, peppercorns, ginger and garlic, Sprinkle little water and grind to a fine puree. Add to the pan, Stir and cook for 3 mins till the raw smell disappears.