BEER
Types
There are literally hundreds of beers. The beer that seems to be more of a problem with stain is the dark beers. Light colored countertops are very suspectable to dark beer staining.
Problem:
The sugars and proteins in the beer can cause a very dark stain on light colored stones.
Solution:
1.Clean the entire area thoroughly with water and a mild detergent( Dishwashing soap like ivory works well).Allow the water and soap to soak into the stone. for several minutes.Lightly agitate the area and remove excess water with a dry towel.Rinse the area with clear water.
2.If the above cleaning procedure does not remove the beer stain than try a stronger cleaner such as ammonia and water.
3.If the stone is still stained prepare a powder
poultice with 30-50 % hydrogen Peroxide.
Several poultices may need to be applied