Heston Blumenthal went in search of the perfect chilli con carne in last week's programme. He joined the crowds at a chilli cook-off in downtown Washington DC before heading back to Bray to test several types of dried chillies, including Somalian hot and devil's penis chillies, before creating his own spice blend. Heston took one of his chefs for an MRI scan to discover the effect that feeding him chilli oil nine times stronger than any natural chilli has! The ingredients that went into Heston's final dish were whiskey, beef short-ribs and a curious blend of spices, all accompanied by a sour cream sorbet and a sweetcorn muffin.

• Heston Blumenthal