Jimmy Doherty finds out why pasta comes in so many different shapes, Kate Quilton is hot on the trail of the spice ratings in our ready meals, and how they are determined, and Briony May Williams looks at the butter content in buttermilk.

Special episode offering advice on improving health and well-being through food. Jimmy Doherty explores if chia seeds might help with over-eating. Briony May Williams asks why producers of gluten-free products seem to be charging more for less. Matt Tebbutt explores whether raw pet food could be the key to a healthy dog. And Kate Quilton discovers some surprising science about watermelon.