🥪The first prepackaged sandwiches were sold in 1980.
🍞The toast sandwich, consisting of a slice of toast between two slices of bread, originated in the 1860s.
🧀The most popular prepackaged sandwich fillings are egg mayonnaise, BLT, and chicken salad.
🥧The Cornish pasty, a portable lunch popular among miners, has a savory filling on one end and a sweet filling on the other.
🥪The toast sandwich can be made by toasting the bread and adding fillings such as cheese and vegetables.