Calcium hydroxide is also known as edible lime, hydrated lime or slaked lime. Edible lime is an alkaline powder used for a multitude of purposes. Although called edible, it is not exactly eaten by itself. It is used with certain plants and herbs, such as tobacco, coca and betel nut (areca catechu) to increase the absorption of the alkaloids into the bloodstream via mucous membranes. Edible lime was also traditionally used in processing corn as a way to increase the absorption of niacin. Additionally, edible lime is used in pickling and processing various other food and beverages. Due to its alkaline properties, it is also used to balance out acidic soil and can be used similarly in mycology when added to substrates.