Pour 2 1/2 cups of water in a pot and bring to a boil
Put-in the glutinous rice and allow water to re-boil for a few minutes
Dilute the cocoa powder in 1 cup warm water then pour-in the pot. Stir continuously
Once the glutinous rice is cooked (about 12 to 18 minutes of cooking with constant stirring), add the sugar and cook for another 5 minutes or until the texture becomes thick.
Remove from the pot and place in a serving bowl.
Serve hot with a swirl of condensed milk on top.