-500g of onions
-70g of salted butter
-1 level tablespoon of sugar
-1 tablespoon of flour
-2 liters of water
-10cl of dry white wine
-1 “magi” cube
-thym, laurel
-200g of grated Gruyere cheese (the cheese is important!!)
– salt, pepper, nutmeg
-bread (baguette or sliced)
Peel the onions and cut them into thin strips (or small pieces).