WLP320 American Hefeweizen Ale Yeast This yeast is used to produce the Oregon style American Hefeweizen. Unlike WLP300, this yeast produces a very slight amount of the banana and clove notes. It produces some sulfur, but is otherwise a clean fermenting yeast, which does not flocculate well, producing a cloudy beer. Characteristics Attenuation70-75% FlocculationLow Optimum Ferment Temp.65-69°F Alcohol ToleranceMedium