Question for you, could aluminium cans be designed with concertinaed walls that can be hand crushed to 20% of original size to aid recycling. 2nd Question, could glass sauce bottles be replaced with an aluminium " bottle " featuring sides that flex to pump air via a reusable screw on a straw / dispenser cap, again making a light weight recyclable product to replace heavy glass bottles with far less true recycling potential. Cheers.