Lightly toast the bread under a preheated grill or in a toaster.
In a medium-sized bowl, mix together the grated cheese, beer or ale, butter, Worcestershire sauce and English mustard. Stir until thoroughly combined.
Spread a generous layer of the mixture over each slice of toast, ensuring it covers the crusts too.
Transfer each slice onto a baking tray and place directly underneath the grill for five minutes or so, until golden brown and bubbling.
Carefully remove from the oven, cut each slice in half and serve hot, either alone or teamed with a crisp green salad and rich, fruity chutney.
