Gouania lupuloides, known as chewstick, is a plant

Plant

Plants are living organisms belonging to the kingdom Plantae. Precise definitions of the kingdom vary, but as the term is used here, plants include familiar organisms such as trees, flowers, herbs, bushes, grasses, vines, ferns, mosses, and green algae. The group is also called green plants or...

 of the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Rhamnaceae

Rhamnaceae

Rhamnaceae, the Buckthorn family, is a large family of flowering plants, mostly trees, shrubs and some vines.The family contains 50-60 genera and approximately 870-900 species. The Rhamnaceae have a worldwide distribution, but are more common in the subtropical and tropical regions...

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The name in Jamaica for a vine with a woody stem which grows in hedgerows in the hills. In Jamaican patois a vine is called a wis (wythie).
To clean one's teeth with this plant one cuts off a portion of the vine, peels off the bark and chews the tip. The tip becomes fibrous and frothy. Chewstick tastes slightly bitter but not unpleasant. The plant is used to make a commercial toothpaste.
Chewstick may also used as an ingredient in Jamaican ginger beer

Ginger beer

Ginger beer is a carbonated drink that is flavored primarily with ginger and sweetened with sugar or artificial sweeteners.-History:Brewed ginger beer originated in England in the mid-18th century and became popular in Britain, the United States, and Canada, reaching a peak of popularity in the...

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