Does anyone have a recipe for the French garlic soup that I believe is called tourin blanchi? It's a specialty of the Dordogne region. It has garlic, onion and egg whites (maybe yolks?) in a slightly thickened chicken broth. After one eats the soup I believe one's supposed to put bread crumbs and red wine in the bowl and drink the mixture. I'm trying to recreate it and I'd love some help.