What Is Irish Moss Used For In Brewing?

What Is Irish Moss Used For In Brewing? To combat protein haze, brewers add Irish Moss to the boiler when making all-grain (mash) or extract beers. Irish Moss is a sea weed extract the function of which is to encourage protein molecules to aggregate into larger particles so that they will settle out of solution.

What does Irish moss to homebrew? Irish Moss is a charged adjunct that pulls tannins and proteins together like a magnet so that the tiny particles form large clumps and sink to the bottom of the brew pot while you cool your wort. Simple as that really!