3 lyon onion Recipes

heads frisee, trimmed washed and torn, bacon (uncured applewood smoked), bacon fat, extra virgin olive oil, onions, finely diced, fresh garlic cloves, chopped, red wine vinegar, dijon mustard, cayenne pepper, salt, pepper, eggs

unsalted butter or 4 tbsp unsalted margarine, yellow onions, thinly sliced, salt, fresh ground pepper, cognac, beef stock or 8 cups broth, fresh thyme , tied into bundle, french bread , cut into 1/2-inch slices, gruyere cheese , coarsley grated, egg yolks (optional), port wine (optional), chopped parsley, garnish