c("Sift the flour, mustard powder, salt and cayenne pepper into a bowl.", "Cut the  butter into the flour and rub in until the mixture resembles fine breadcrumbs.", "Add the cheese and mix the ingredients together.", "Mix to a stiff paste with the  egg yolk and water.", "Turn out onto a floured work surface. Knead quickly until  smooth and crack-free.  Wrap in a polyethylene bag or foil.", "Chill for 30 minutes before using.", "Roll out, cut into strips and place on a baking sheet.  Bake at  200 C / 400 F / Gas 6 for 15 minutes until golden brown."
)