Matt Tebbutt visits the Shreddies factory to uncover how cereals keep their crunch. Kate Quilton finds out why some egg yolks are more yellow than others, and if it is really worth paying extra for them. Briony May Williams goes in search of the ultimate bacon butty, and Amanda Byram visits the largest dairy company in the UK to get the lowdown on the shelf life of milk.

Jimmy Doherty unwraps some of his all-time favourite Asian adventures. In Thailand, he reveals an unexpected addition to spring rolls. On a visit to India, Jimmy uncovers why turmeric is in a lot more of your food than you realise. And in Sri Lanka, our host cracks the case of why coconuts are so popular in the UK.