Beef bourguignon with bacon garnish - Trois fois par jour

Ingredients

• 2 cups pearl onions
• 1/4 cup flour
• 2 teaspoons fleur de sel (or sea salt)
• 2 lb beef cubes for stewing
• 2 tablespoons butter or oil
• 3 celery stalks, finely diced
• 3 carrots, peeled and finely diced
• 3 cloves garlic, finely chopped
• 3 French shallots, minced
• Salt and pepper, to taste
• 2 1/4 cups beef broth
• 1 cup vegetable broth
• 1 1/2 cup red wine
• 1/2 can tomato paste (the small can)
• 8 slices bacon, finely diced
• 8 oz white mushrooms, sliced