Burnt rice usually results from too-high heat, insufficient liquid, or thin-bottomed pans. Use a heavy pot with a tight lid, bring water to a boil, then reduce to the lowest simmer and avoid lifting the lid during cooking. Ensure proper rice-to-water ratio and don't rush the simmer stage.
If rice begins to stick and burn, carefully transfer unburnt rice to a new pot and discard the scorched layer. Regular stirring is not required for most methods and can cause stickiness.