A free lunch is a sales enticement that offers a meal at no cost in order to attract customers and increase revenues from other offerings. It was a tradition once common in saloons in many places in the United States, with the phrase appearing in U.S. literature from about 1870 to the 1920s. These establishments included a "free" lunch, varying from rudimentary to quite elaborate, with the purchase of at least one drink. These free lunches were typically worth far more than the price of a single drink. The saloon-keeper relied on the expectation that most customers would buy more than one drink, and that the practice would build patronage for other times of day.