Sarsaparilla n. : Any plant of several tropical American species of Smilax.

Sarsaparilla n. : The bitter mucilaginous roots of such plants, used in medicine and in sirups for soda, etc.

Example:
what is your favorite brand of Sarsaparilla and where can i buy it?

Taxonomy
Sarsaparilla, species, false sarsaparilla, free encyclopedia, Smilax, herbs and spices, Smilax regelii, Sioux City Sarsaparilla, unranked, Hardenbergia violacea, East Australia, Flora, Killip, grape vine, soft drinks, search, Kingdom, Family.

Defination from the web:
... Sarsaparilla is not readily available in most countries, although many pubs and most major supermarket ... Retrieved from "http://en.wikipedia.org/wiki/Sarsaparilla" ...