A fortune cookie is a crisp Asian American cookie usually made from flour, sugar, vanilla, and oil with a "fortune" wrapped inside. A "fortune" is a piece of paper with words of faux wisdom or a vague prophecy. In the United States and Canada (although also available in other parts of the Western world), it is usually served with Chinese food in Chinese restaurants as a dessert. The message inside may also include a list of lucky numbers (used by some as lottery numbers) and a Chinese phrase with translation. The exact provenance of fortune cookies is unclear, but various immigrant groups in California claim to have popularized them in the early 20th century, basing their recipe on a traditional Japanese cracker.The cookies are mostly unknown in mainland China or Taiwan.