Nestle Aero Mint Chocolate Bar 27g Smooth milk chocolate filled with peppermint flavoured bubbles Enjoy a moment of bubbly pleasure for yourself No artificial colours, flavours or preservatives Imported from England, these famous chocolate bars are made by filling the centers with air bubbles, and smoothing on a chocolate covering. Aero Peppermint bars consist of a cool mint filling that's full of tiny air bubbles, and is coated in a thick layer of creamy milk chocolate.