Fecula is a flavourless starchy ingredient amylaceous and pulverised, extracted from vegetables like tubers, rhizomes, seeds used for cooking as a food thickener.
The word comme the latin one faex (meaning dregs), in low-latin faecula.
Various feculas
Arrow-root, based on tropical rhizomes or plants bulbs,
By means of a rose, c, water is sprinkled over the entire surface of the sieve and separates the fecula from the fibrous matter.
The water, charged with fine particles of fecula, and forming a sort of milk, flows through the tube, z, into the lower part, N, of the washing apparatus, F, while the pulp runs over the sieve and falls into the grinding-mill, H.
This latter divides all those cellular portions of the fecula that have not been opened by the rasp, and allows them to run, through the tube, h, into the washing apparatus, F, where the fecula is completely separated from woody fibers.