Some cottage cheese and yogurt containers have what appears to be a liner of aluminum between the container lid and the cottage cheese or yogurt. Is this piece aluminum? ~Recycler

Dear Recycler,

There are many look-alike aluminum liners. The best way to determine if the liner is aluminum is to crumble the liner in your hand. If it remains crumbled, the liner is aluminum and it recycles with aluminum foil. If it unfolds, it is not aluminum, and should go in the trash.