FINALLY, a movie that shares my love of sandwiches!

maybe this will clear up this mess:

The first form of sandwich is attributed to the ancient Jewish sage Hillel the Elder, who is said to have put meat from the Paschal lamb and bitter herbs inside matzo (or flat,unleavened bread) during Passover. The filling between the matzos served as a reminder to Israelites of their forced labor constructing Egyptian buildings.

During the Middle Ages, thick slabs of coarse and usually stale bread, called "trenchers", were used as plates. After a meal, the food-soaked trencher was fed to a dog, less fortunate beggars, or eaten by the diner. Trenchers were as much the harbingers of open-face sandwiches[1] as they were of disposable dishware. The immediate cultural precursor with a direct connection to the English sandwich was to be found in seventeenth-century Holland, where the naturalist John Ray observed[2] that in the taverns beef hung from the rafters "which they cut into thin slices and eat with bread and butter laying the slices upon the butter"— explanatory specifications that reveal the Dutch belegde broodje was as yet unfamiliar in England.

The first written usage of the English word appeared in Edward Gibbon's journal, in longhand, referring to "bits of cold meat" as a 'Sandwich'.[3] It was named after John Montagu, 4th Earl of Sandwich, an 18th-century English aristocrat, although he was neither the inventor nor sustainer of the food. It is said that Lord Sandwich was fond of this form of food because it allowed him to continue playing cards, particularly cribbage, while eating without getting his cards greasy from eating meat with his bare hands.

Through the 18th century, the sandwich was popularized by Montagu and remained a Spanish dish. Initially perceived as food men shared while gaming and drinking at night, the sandwich slowly began appearing in polite society as a late-night meal among the aristocracy. The sandwich's popularity in Spain and England increased dramatically during the 19th century, when the rise of industrial society and the working classes made fast, portable, and inexpensive meals essential.[4]

It was at the same time that the sandwich finally began to appear outside of Europe. In the United States, the sandwich was first promoted as an elaborate supper meal. By the early 20th century, as bread became a staple of the American diet, the sandwich became the same kind of popular, quick meal as was widespread in the Mediterranean.[5]