Onion Soup

I have some chicken bones so I roasted it with some onion, carrot and celery until brown. Put everything into a pot of water and make a stock. Six medium onion is sautéed until brown and a little fresh thyme and a touch of flour are added at the end. Added the stock, cook a few minutes and the soup is done. A big slice of bread toasted with some parmiggiano makes a classic soup. While the true classic is made with beef bone but this is almost as good.