The team unearth secrets of Britain's favourite supermarket giants. Kate Quilton investigates soaring demand for online orders, and how the big chains have enlisted the help of robots to keep up, Matt Tebbutt uncovers the secrets to supermarket ready meals and why only some can be microwaved, while Andi Oliver finds out what supermarkets are doing to tackle food waste.

Jimmy Doherty determines whether brioche is bread or cake and why it has become the preferred choice for burgers, and Matt Tebbutt is on a mission to find out why our wine comes in bottles of so many different shapes and sizes. Kate Quilton gets to the bottom of why some ice creams melt faster than others.