A purified form of carrageenan (Irish moss) that is more effective at coagulating and settling out haze-causing proteins in the brew kettle and primary fermenter. To use: rehydrate 1/4 teaspoon of Super Moss HB in 4 oz of cooled wort to create a slurry, then stir in the slurry during the last 10 minutes of the boil and whirlpool the wort during chilling.