The yarn needed for the Brewing Hat can be found early on in the game in Mafia Town, as well as various other chapters. In order to unlock the hat, the player must find at least one Brewer Yarn. After that, it is necessary to collect at least four yarn balls in order to stitch the hat.
- The design of the Brewing Hat, as well as its main function, is possibly a reference to Megumin from the KonoSuba series, a wizard obsessed with creating explosions.
- The pink and white flair for the Brewing Hat resembles the hat worn by Vivian in Paper Mario: The Thousand-Year Door.