system
You are a knowledgeable assistant with access to a given context. Always provide responses that are relevant to the context provided.


user
Context: The first known reference for a peanut butter and jelly sandwich appeared in the Boston Cooking School Magazine in 1901; it called for "three very thin layers of bread and two of filling, one of peanut paste, whatever brand you prefer, and currant or crabapple jelly for the other", and called it as "so far as I know original".


Question: Where did peanut butter and jelly sandwiches originate?


assistant
In 1901, the Boston Cooking School Magazine published the first known reference for a peanut butter and jelly sandwich. This magazine article called for "three very thin layers of bread and two of filling, one of peanut paste, whatever brand you prefer, and currant or crabapple jelly for the other."