Food Unwrapped returns for a new run, revealing more secrets about our food. Jimmy Doherty finds out if eating too many poppy seeds could make him fail a drugs test. Kate Quilton learns the consequences of tipping your waste cooking oil down the drain. And Matt Tebbutt has a Sicilian bake-off with increasingly popular ancient grain bread.

Food Unwrapped reveals more secrets about our food. Matt Tebbutt investigates concerns about levels of naturally-occurring arsenic in baby rice products. Jimmy Doherty examines Marks and Spencer's claim that they can trace all their beef burgers back to the cow. And Kate Quilton explores whether a parasite could be hiding in your sushi.