The sudden proliferation of porridge is there for all to see, across the country. Café chains like Pret, Starbucks, McDonalds; instant tubs on offer in your local supermarket; on the train, even. Sheila Dillon explores the current fashion for porridge, and meets the "porridge pioneers" who have ridden the sticky porridge wave and created booming porridge businesses. She eats breakfast with Alex Healy Hutchinson, founder of the Covent Garden porridge restaurant 26 Grains; she tours the Edinburgh factory of Stoats Oats, a business which started from a mobile porridge van at rock festivals and is now on track for a turnover of £10 million. She hears from contestants from all over the world at this year's Golden Spurtle International Porridge Championship, and she talks to the Harvard scientist who published the largest study about the health benefits of porridge. (Yes it certainly is good for you.) Finally, back in her kitchen Sheila convenes her own porridge championship with Jamaican chef Levi Roots, Scandinavian chef Trine Hahnemann and Scottish chef Shirley Spear. Whose porridge will taste best? And which Bob Marley song has a verse about cooking porridge?