Leaching product is a term used to describe a substance that is used to extract minerals or other materials from a solid material. The most common leaching product is LYE, which is a strong alkaline solution made from either sodium hydroxide or potassium hydroxide. LYE is used in a variety of industries, including food processing, soap making, and metalworking. It is also used in the production of biofuels and in the extraction of oil from shale.