If you have a granite countertop you know just how durable they are. They do stain, however. If you get an organic-based stain, from such things as fruit or even coffee, basic cleaning will not be enough. To remove the stain create a mixture of hydrogen peroxide and a couple drops of ammonia. Work the mixture into the stain and let sit for a few minutes. Wipe up the mixture and clean the surface as usual. The stain should be gone, if not, a second application may be required.
