What is "peppermint patty"

n. a patty flavored with peppermint

Patricia "Peppermint Patty" Reichardt is a fictional character featured in Charles M. Schulz' comic strip Peanuts. She is one of a small group in the strip who lives across town from Charlie Brown and his school friends (although in The Peanuts Movie she lives in the same neighborhood and attends the same school). She has freckles and auburn/ brunette hair and generally displays the characteristics of a tomboy. She made her first appearance on August 22, 1966. The following year, she made her animated debut in the TV special You're in Love, Charlie Brown and began (in the comics) coaching a baseball team that played against Charlie Brown and since has had other adventures with him. Uniquely, she refers to Charlie Brown and Lucy as "Chuck" and "Lucille", respectively.