Irish Moss

Irish Moss (Fining Agent) 
for a clearer brew.

Beer can be clairified using Irish moss, a fining agent. Fining agents all work by making the smaller molecules aggregate into larger particles so they settle out of solution. 

This can be mathematically described by Stokes Law: Where v is the rate of sedimentation, r1 is the density of the particle and r2 is the density of the wort, r is the radius of the particle, g is 9.8 m/sec2 (a.k.a. acceleration due to gravity), and h is the viscosity of the medium. In other words, as the density and size of the particle increases it will settle out faster. In addition, a thinner wort will allow settling to occur faster.

Directions: Add one teaspoon during last 15 minutes of boil.