Pituri

Pituri is a common name for a mixture of wood ash and leaves traditionally chewed as a stimulant (or, after extended use, a depressant) by Aboriginal Australians widely across the continent. Leaves are gathered from any of several species of native tobacco (Nicotiana), or from at least one distinct population of the species Duboisia hopwoodii. Various species of Acacia, Grevillea and Eucalyptus are burned to produce the ash. The term may also refer to the plants from which the leaves are gathered or from which the ash is made. Some authors use the term "pituri" to refer only to the plant Duboisia hopwoodii and its leaves and any chewing mixture containing its leaves.