Ainsley Harriott uses nuts and seeds to create tasty dishes, including a roasted beetroot, candied walnut and goat's cheese salad. He also visits the Funky Nut Co for a tour with founder Julian, who makes peanut butter with a difference, while, back in his own kitchen, Ainsley uses a very special peanut butter in his hearty sweet potato, spinach and peanut stew.

Ainsley celebrates the unsung heroes of many meals - grains and pulses. He receives a masterclass in milling flour before using it to make a pizza margherita.