In a blistering collection that should be accompanied by a large jug of iced cold water, Paul Hartley brings his inimitable skills to creating 50 searingly hot recipes for lovers of the much loved and iconic yellow sauce from Norwich. When, way back in 1814, Josiah Colman created this zesty mustard he couldn't have envisioned in his wildest dreams the scorching impact that his heart-stoppingly hot condiment would have upon taste buds worldwide.