Break up pulp into smaller pieces. Place the pulp in a saucepan with 2 cups of water and bring it to a boil. Remove from the heat and set aside to cool.
Squeeze the paste with your fingers to loosen it up. Put the mixture in a cheesecloth and tie the ends well. Add cheesecloth to 6 cups of warm water and let it steep for 2 hours.
Squeeze the cheesecloth to extract juice and some pulp.
Stir in sugar and rose water. Chill and serve cold.