Prospects for using cattail as a food raw material and a source of flour

Wild cattail, found in marshy areas, is capable of producing up to 6,400 pounds of flour per acre, while American wheat yields about 3,000 pounds of grain before milling. These yield figures for cattail are based on estimates of wild plants rather than commercial cultivation. At the same time, cattail is undemanding, grows without annual planting, and is able to thrive where traditional crops do not survive.

The edibility of cattail is confirmed by archaeological evidence: in 2010, the team of archaeologist Anna Revedin discovered traces of processing this plant on ancient tools dating back about 30,000 years from Italy, Russia, and the Czech Republic. Practically the entire plant is edible. Spring young shoots taste like cucumbers or cabbage after cooking. Immature green flower spikes have a sweetish nutty flavor similar to corn. Male flowers yield yellow pollen used in baking and for traditional sweets, such as the Kiriat sweet from southern Iraq.

The underground parts of the plant (rhizomes) are rich in starch and contain edible fibers tasting like potato, water chestnut, or cucumber. In the early 1900s, Professor P.V. Klausen successfully experimented with making flour and puddings from cattail. The main obstacle to mass production is the labor-intensive nature of the process: unlike wheat, whose grain is located at the top and accessible to machinery, cattail starch is in the underground roots in the mud. Extracting the raw material requires manual digging, cleaning, washing, and separating the starch from the fibers.