Harmony squash was a vegetable that could be eaten by people. In the High Republic Era, cooking droids prepared and served the squash at the Starlight Beacon space station. In 231 BBY, while he was on the station, Jedi Padawan Reath Silas went to the dining facility and, happy with the available food choices, put some roasted harmony squash on his plate.
Justina Ireland included harmony squash in her young-adult novel Out of the Shadows, which was released in 2021 and is a part of Phase I of the Star Wars: The High Republic multimedia project.