An airlock is a device used in the process of making beer, wine, or other fermented drinks. It helps keep the drink clean and safe from germs and other things that could spoil it. The airlock works by allowing gases, like carbon dioxide, to escape from the container where the drink is being made, while keeping air out. This is important because the gases need to escape, but the drink needs to be protected from the air, which can cause contamination. The airlock has two openings, and one of them is filled with water. The water acts as a barrier to keep germs out, but it allows gases to escape. As the gases escape, they bubble up through the water and out of the other opening.
