A quern is a single-square workshop used to grind certain plants into sugar, flour, dye, and slurry. Each milling job requires an empty bag. The process will also produce seeds from plants being milled. Unlike a millstone, the quern is powered by the dwarf using it to perform the labor. A quern must be created at a Mason's workshop before it can be built as a workshop.
The quern may also be used to mill seeds/nuts to paste.
Labors: Milling