Rinse the rice until the water runs clear. Place it in a large pot with clean water and cook for a maximum of 30 minutes, or until it's partially cooked.

Once it's partially cooked or just before it bursts, add the milk, stir, and let it simmer for 35 minutes on low heat. Once cooked, add the sweetened condensed milk (if using, you won't need sugar). If you prefer not to use it, sweeten with sugar. Let it simmer for 5 more minutes. Add cinnamon to taste to each serving and enjoy with your family.