Dried Black shiny solid Aloe gum Gum of aloe is a yellow, thick, sticky and bitter sap that is obtained from most aloe plant varieties. Industrially, it is also referred to as aloe latex. This should not be confused with the popular gel that contains many antiseptic properties and is obtained when the aloe leaf is broken. The yellow sap is boiled to form a black shiney solid like to reduce pachaging volume for ease of transportation.