Flour is an ingredient in cooking. Flour can be made from cave wheat, longland grass and whip vine by milling plants at a millstone or quern at 1:1 ratio. Milling plants needs one bag for every job. Flour will be used by the kitchen when 'prepare meal' tasks are queued if it is enabled in the kitchen menu (default).
If stored inside on a pile, flour is not subject to wear, even outside of barrels.
The value of both dwarven wheat flour and longland flour is 20.
The value of whip vine flour is 25.