2 tbsp Dijon mustard
15²µ/½´Ç³ú plain flour
salt and freshly ground black pepper
pinch ground nutmeg
4 slices white bread
50²µ/1¾´Ç³ú butter
100²µ/3½´Ç³ú ³Ò°ù³Ü²âè°ù±ð cheese, coarsely grated
150ml/5fl oz hot full-fat milk
4 thin slices smoked ham