In our Georgia brewery, we use ionic air rinsing — which is just air instead of water — to clean our bottles.

But Ling Yu, who runs the business with a Mo, insisted: "We know there is nothing but air in the bottles, and so do our customers." People can put their own problems into them.

A vending machine stocked with bottles of summer scented air was assembled at Slough train station to help evoke holiday memories among commuters.