Slice the Plum Loaf into 8 slices and butter one side of each. Grate the gruyere cheese and layer with the ham on 4 slices (on the unbuttered side). Put the remaining slices on top of the 4 to make a sandwich. Using a griddle or a sandwich toaster, cook the pockets until toasted and melting. Serve in a greaseproof paper pocket with a nice chutney.
