Champorado ~ Chocolate Rice Pudding

1 cup glutinous (sweet / sticky) rice
2 1/2 cups water
1/2 cup (more or less to taste) unsweetened cocoa
1/2 cup (more or less to taste) sugar
1/8 tsp vanilla extract
some sweetened condensed milk

Cook rice in a medium-sized saucepan with 2 1/2 cups water.   Stir constantly.
When rice is ready (rice should be somewhat transparent), add cocoa, sugar and
vanilla.  Serve in bowls with swirls of sweet condensed milk on top.