A kettle fining derived from seaweed. Add 1 teaspoon per 5 gallons to the last 15 minues of the boil to enhance cold break (protein coagulation).
Always excellent service.
Works well to provide clarity to the beer.
Why make an ale without? As in all recipes; season to taste.
I've used this Irish Moss in a couple batches. Seems to do a good job clearing things up.
Worked great. Everyone loved the beer.