Three Piece Airlock
A simple and powerful tool for the home fermenter. An airlock allows CO2, a natural byproduct of fermentation, to escape without allowing any oxygen in. Oxygen can cause mold on your ferments, so keeping out of the process is a key to delicious krauts and pickles. Simply remove the middle piece, add water to the fill line, pop the middle piece back in, put the lid on, and your ready to go!