Cowboys ate specific foods carried on chuck wagons. There were many special foods on chuck wagons, ready for hungry cowboys.

Food that was eaten along the drive became better over time with the invention of new cooking equipment, such as dutch ovens. The food the cowboys ate included:
When cattle drives first began, every cowboy along for the drive was in charge of bringing his own breakfast, lunch, and supper. In addition they were also required to bring all their own cooking equipment. However, a man by the name of Charles Goodnight, one of America’s first cowboys, realized that the extra baggage slowed the cowboys down along the drive.
Goodnight then pioneered the use of chuck wagons. Chuck wagons were wooden, sometimes covered vehicles driven by older cowboys who were hired for cattle drives to be cooks, repairmen, doctors, gravediggers, and perform all sorts of tasks along the drive.
The cooks were considered second in command along the trail and all other cowboys thought twice before crossing their path if they wanted to eat well. The wagons themselves were equipped with small specific areas to store food and other cooking supplies, in addition to having spare room to carry all the cowboy’s belongings.
It is believed that the American word cowboy spawned from the Spanish word caballero. A caballero in Spanish means a horseman. The American cowboy is defined as any boy or man who worked with cattle. Cattle were introduced to America by the Spaniards some time during the 1500s.
Cattle became domesticated and more and more people began to desire the meat they could provide. However, cattle were native to only the states in the south. When demand for meat to the North began to rise, this encouraged the idea of cattle drives.
Cowboys were hired to escort these cattle on many days journey from areas in the South to areas in the North where they could be butchered. Along these long journeys, the cowboys had to eat.