Biocellulase W is a liquid enzyme preparation derived from Trichoderma reseei. It is a useful additive in wort production when the mash ingredients do not provide enough enzymatic power by themselves. Treatment of mash with Biocellulase W results in the breakdown of complex carbohydrates such as β-glucans and arabinoxylan into simpler polysaccharides. This reduces wort viscosity, increases extract, increases runoff rates, and reduces beer haze.

Add Biocellulase when mashing in. Usage varies. Higher usage is recommended for grain bills including high proportions of wheat or adjuncts.