Turn off the garbage disposal. Remove any large pieces of food from around the drain.
Pour 1/2 cup of baking soda into the drain, followed by 1 cup of white vinegar.
Place the drain plug over the opening and leave it in place for 10 minutes. The foaming mixture of vinegar and baking soda will dissolve food debris.
Boil 2 cups of water in a teapot. Pour the boiling water down the drain. The hot water will flush the remaining clog.
Plug the sink and fill the basin with 1/2 gallon of lukewarm water. Add 1 tablespoon of liquid chlorine bleach.
Remove the plug and allow the mixture to drain. Wear a rubber glove when removing the plug as the cleaning agent may irritate sensitive skin.
Pour 2 cups of boiling water down the drain.