Chocolate-Orange Rice Pudding

Stir milk rice sugar orange juice and orange zest together in a heavy saucepan; bring to a boil reduce heat to medium-low and cook stirring frequently until the rice is tender and the mixture is thickened 35 to 40 minutes.

Remove the saucepan from heat. Stir orange liqueur and cocoa powder through the rice mixture; add chocolate chips and stir until melted into the pudding.