A peck of peppers is equal to two gallons of peppers or eight dry quarts. The expression “peck of peppers” originates from the nursery rhyme “Peter Piper” by Mother Goose.
A peck is a volume unit in the U.S. Customary and British Imperial Systems. Originally, it was used to measure flour. In the United Kingdom, four pecks equal one bushel. Peter Piper picked a peck of pickled peppers.