Even though it's just the bottom layer that's blackened, the smoky smell and bitter flavor of burned rice permeate all the way to the top grains. Salvage overcooked rice with this quick trick.
Transfer the unburned rice carefully from the cooking pot to another lidded bowl or pot.
Wipe two or three onions with a clean, damp cloth.
Remove the papery outer peels from the onions.
Spread the onion peels completely over the surface of the unburned rice.
Cover the pot or bowl tightly and let it sit for 15 minutes. The onion peels will absorb the bitterness.
Discard the onion peels and serve the rice.
While transferring the rice, take care not to scrape the scorched layer away from the bottom or sides of the cooking pot.