Sausage Sandwich Game

One of my favourite radio programmes is the Danny Baker Show, on Radio Five Live each Saturday morning, from 9-11am. It features the Sausage Sandwich Game, in which two callers have to predict the answers a celebrity will give to three questions, to which only the celebrity could possibly know the answer.  The third question is always about the celebrity's choice of sauce on a sausage sandwich - will it be red sauce, brown sauce or no sauce at all?