French Onion Soup

Ingredients

The Stock
4 lb lbs. cracked beef bones/soup bones w/o meat
2 onions, halved
2 scrubbed quartered carrots
2 celery stalks
bouquet garni:0.25 tsp. thyme, 1 bay leaf, 6 parsley sprigs, 2 unpeeled garlic cloves, 2 whole cloves
10 cups water
For the Onions and Soup
1 1/2 lbs or about 5 cups of thinly sliced yellow onion
3 Tbsp Tbs butter+1 Tbs Oil
1 tsp salt
1 ⁄4 tsp sugar (helps the onions to brown)
3 Tbsp flour
1/2 cup dry white wine
The strained Stock
to taste salt and pepper
2 Tbsp tbs Cognac, brings the flavors together
4 rounds of hard-toasted french bread
Grated good Swiss Cheese to cover
Cook and assemble

Heat oven to 450F. Arrange the meat, bones, onions, and carrots in a cast iron pan. Place in the middle portion of the oven and roast for 30-40 minutes, turning occasionally until nicely browned.
Remove from the oven and drain fat out of roasting pan. Transfer into an 8 or 10 quart soup kettle. Pour a cup or two of the water to the pan, set over heat (or back in the still hot oven). Scrape up all the brown bits at the bottom. Pour all that into the kettle.
Tie the Bousquet garni in a coffee filter or cheese cloth.
Cover ingredients with 10 cups water. Bring to a simmer, skim and add the salt, celery and bouquet garni. Simmer the stock for 4 to 5 hours. Strain the stock out of the kettle into a bowl.
ONIONS, COOKING AND FINAL ASSEMBLY
Melt butter, add oil to a large pot. Add sugar and onions, cover and cook on low for 30 minutes.
Raise heat and cook, stirring often on medium until golden, around 45 minutes
Stir in flour, cook for a minute and add stock and wine. Partially cover and simmer gently for one hour.
Add Cognac, ladle into oven proof soup bowls, add bread slice and cover with cheese.
Bake at 400 degrees until lightly brown.