Bases can often be identified by the OH term in the end of their chemical formula, as seen in sodium hydroxide NaOH and potassium hydroxide KOH . Just like with acids, there are a some exceptions to this rule. Some organic acids have formulae that make them look like bases. That simply makes water neutral. Both acids and bases usually need to be dissolved in water to be effective.
Diluted bases have a bitter taste.
Of course, you should use caution when tasting any chemical, especially one that is caustic to your skin. A major use for bases is in cleaning. Soaps and detergents are bases or alkalis. They also can be used to neutralize solutions that are too acidic. Industrial uses for alkalis include making new materials.