Many beverages like milk, soy milk, wine and even water come packaged in paperboard containers called Tetra Paks. These paper containers are made of several layers of paperboard, aluminum and other recyclables, and they used to be hard to recycle. Now, many communities accept them for recycling, which is great news. When recycling Tetra Paks, you can leave the plastic caps on; they are recyclable. And don’t flatten them too much since recycling sorting machines recognize these materials by their 3-D shape.