Kate Quilton heads to Japan on the trail of tofu, wondering how green soy beans are turned into something so white and creamy. Jimmy Doherty investigates reports that supermarket ready meals have nearly doubled in size since the 1950s. He tracks down the ready meals of his childhood and discovers whether bigger plate sizes could also be causing people to eat more. Plus, in Wales, Matt Tebbutt looks into a new kind of milk, which it is claimed is easier to digest.
Aired: 1 Apr 2016