Rice Hulls

Neutral Mash Filter Aid • Prevents Stuck Sparges • Adds No Flavor or Color Rice Hulls are the inert, papery outer husks of rice, and they are one of the most useful non-ingredients a brewer can keep on hand. They contribute no sugar, no flavor, and no color; their only job is to keep the grain bed loose and open so wort can flow freely during the sparge. In mashes heavy with wheat, oats, rye, or flaked adjuncts — grains that have no husk of their own and turn gummy — rice hulls are the cheap insurance that prevents a slow, stuck, or set sparge that can ruin a brew day. Function & Character Completely neutral: no flavor, aroma, or color Not a fermentable — contributes zero extract Keeps the grain bed porous and free-flowing Prevents stuck and slow sparges Especially valuable in high-wheat, oat, and rye mashes Because they are inert, rice hulls can be added to any recipe with no effect on the finished beer other than a smoother, faster lauter. Brewing Applications Rice hulls are recommended whenever a mash leans heavily on huskless or sticky grains, including: Hefeweizens and wheat beers Oatmeal stouts and hazy IPAs Rye ales and rye IPAs Any mash above roughly 25% wheat, oats, or rye Usage Recommendations A typical addition is 0.5 to 1 pound per 5-gallon batch, mixed evenly into the grain during the mash. There is no risk of overdosing — extra hulls simply keep the bed looser. Give them a quick rinse before use if you'd like to knock down any dust. Specifications Type: Mash filtering aid (not a fermentable) Extract: None Color: None Flavor Notes: Completely neutral Usage Rate: 0.5–1 lb per 5-gallon batch as needed Whether you're brewing a wheat-heavy hefeweizen or an oat-loaded hazy IPA, a handful of rice hulls is the simplest way to guarantee a smooth, trouble-free sparge.