Slice the Cheddar Cheese into 4 slices of 2 1/2 ozs each.
Mix the salmon with the onion, lemon juice, and mayonnaise.
Spread the mixture on thick slices of French bread and top with a
slice of cheddar cheese. Add a top slice of bread and butter both
sides of the sandwich generously. Grill until brown, then turn and
brown the other side, and the cheese is melted. Serve hot.