01 - Rinse the rice under cold water until the water runs clear, then drain thoroughly.
02 - Combine milk, heavy cream, sugar, salt, and butter in a medium saucepan and bring to a gentle simmer over medium heat, stirring occasionally.
03 - Add the rinsed rice to the simmering mixture, reduce heat to low, and cook uncovered while stirring frequently until the rice is tender and the mixture is creamy, approximately 30 to 35 minutes.
04 - Stir in vanilla extract and ground cinnamon, cook for an additional 2 minutes, then remove from heat.
05 - Allow to cool slightly before serving warm or chilled, and garnish with a sprinkle of cinnamon, fresh berries, or toasted nuts as desired.