Suzy Cato explores the workings of the digestive system in her science programme for five to nine year olds. A plate of baked beans is the starting point — but, first, the inevitable by-product of baked bean consumption is addressed in vox pops. Vinegar, funnels and pantyhose are just some of the aids Cato uses to simulate the process; and the changes are contrasted with untouched baked beans at each stage. The results aren't pretty but the explanation is clear and good natured — and the audience outside the studio is spared the resulting smells.