Onion Soup (Gratinée)

Brown the finely chopped onions in butter or margarine

Sprinkle with flour and pepper, stirring well, adding beef broth as needed (can be made with concentrated beef cube)

Add the white wine and let it simmer for a minute

Slice the pork into thin strips and dry them in the oven

In a pie dish, layer onions, cheese, and pork

Pour the contents of the pot on top and bake for 30 minutes

Note: some people use water instead of beef broth, but it's logical that with beef broth the flavor is more savory and refined.