In a large sauce pan over medium-high heat, add rice, coconut milk, cinnamon stick, salt, and sugar. Mix together well and allow to just boil then decrease heat to low, cover, and cook for 25-30 minutes. Check occasionally and stir.

Add raisins (optional) and cook for an additional 15 minutes, stirring frequently until creamy and the liquid is mostly evaporated. If liquid evaporates too quickly, add some to the rice mixture.

Serve warm or cold, garnished with ground cinnamon.