1 tablespoon (14g) baking soda
1 teaspoon (5ml) lemon juice
2 tablespoons (30ml) vinegar (optional)
It’s easy to keep porcelain sinks sparkling clean with this all-natural, germ-fighting combination: To begin, place the baking soda in a small pile in the sink. Pour the lemon juice on top and watch it start to bubble. Stir with your finger to form a paste, then lightly rub the paste over the entire sink with a damp sponge. Rinse thoroughly with fresh water. For an extra sanitizing measure, pour the vinegar on the sponge and use it to give everything one last wipe down. (the vinegar scent will fade as it dries).