Separate spinack leaves from the stem. Remove the skin and seeds from cucumber. Cut it into small pieces. Chop the ginger.
In a pan put the butter and add garlic chopped finely. Fry for a while. Then add spinach, ginger and cucumber pieces. Stir it well. Add water and bring to boil. Cook till the spinach is tender. Cool it. Grind it to a fine puree and strain it. Put it back in a pan and heat it. Sprinkle salt and pepper powder and serve hot.