Black Jack is an aniseed-flavored chewing gum manufactured by the American company, Gerrit J. Verburg Co.^[1]

In 1869, exiled former Mexican president and general Antonio Lopez de Santa Anna (famous for losing the Texas War of Independence) was living in New Jersey.^[2] He brought Mexican chicle with him in hopes of selling it to raise funds to help him return to power in his home country. He persuaded Thomas Adams of Staten Island, New York, to buy it. Adams, a photographer and inventor, intended to vulcanize the chicle for use as a rubber substitute. Adams' efforts at vulcanization failed, but he noticed that Santa Anna liked to chew the chicle, which the ancient Mayans had done. Disappointed with the rubber experiments, Adams boiled a small batch of chicle in his kitchen to create a chewing gum. He gave some to a local store to see if people would buy it; they did and he began production.

In 1871, Adams received a patent on a gum-making machine and began mass-producing chicle-based gum. His first product ("Snapping and Stretching") was pure chicle with no flavoring, but sold well enough to encourage Adams in his plans. He began to experiment with flavorings, beginning with sarsaparilla. In 1884, he began adding licorice flavoring and called his invention Adams' Black Jack, the first flavored gum in the U.S. It was also the first gum to be offered in sticks.

Black Jack Gum was sold well into the 1970s, when production ceased due to slow sales.^[3] It was re-introduced in 1986^[4] and again in 2019.^[5]