“Wow-Wow Sauce, a mixture of mature scumble, pickled cucumbers, capers, mustard, mangoes, figs, grated wahooni, anchovy essence, asafetida and, significantly, sulfur and saltpetre for added potency. Ridcully inherited the formula from his uncle who, after half a pint of sauce on a big meal one evening, had a charcoal biscuit to settle his stomach, lit his pipe and disappeared in mysterious circumstances, although his shoes were found on the roof the following summer.”