Rice hulls provide bulk and help prevent the mash from settling and becoming stuck during recirculation or the sparge. Rice Hulls can be especially beneficial when using single vessel brewery such as a Robobrew, Grainfather or Guten.
This can be very helpful when making wheat or rye beers with a low percentage of barley malt and barley husks. Rinse thoroughly before using.
Use Rice Hulls at a rate of around 5% of you malt bill, or up to 20% where necessary.