Tasteless, odorless and colorless water-soluble protein added to maturing beer.
Use 2/3 cup cold water plus one teaspoon of gelatin, and stir the solution. Place the water/gelatin mixture in the microwave, heat it 15-30 seconds at a time, stirring each time. Heat the gelatin to 150F. Give the mixture one last stir, and dump it straight into your beer, Gently swirl and return it to your fridge or kegerator for 24-48 hours. If you used a keg, purge the headspace with CO2.