Macaroni And Cheese Casserole

• 1/2 cooking time
• 700 ml milk
• 200 gr luncheon meat
• 120 gr seasond fine dry bread crumb
• 110 gr sharp cheddar cheese
• 100 gr elbow macaroni
• 14 gr butter
• 14 gr melted butter
• 10 ml dry mustard
• 9 gr flour