To be tested tonight: the hard-boiled gratin, the economical recipe that works wonders with what you have in the fridge

Kitchen utensils

1 pot
1 wooden
spoon 1 whisk
1 casserole dish
1 oven
Ingredients
6 eggs
30 g butter
30 g flour
500 ml milk
1 pinch of grated nutmeg
Salt and pepper
70 g grated Emmental cheese or special gratin mix
100 g diced ham or cooked vegetables (leek, spinach, etc.) (optional)
Preparation