In a Dutch oven or casserole set over moderate heat melt the butter. Add the shallots and cook, stirring, for 3 minutes. Add the garlic cloves, thyme, onions, chicken stock and salt and pepper, bring to a boil on top of the stove and cover with foil and lid. Transfer Dutch oven to a preheated 325 degree oven and cook for 4 hours. Discard thyme.
In a blender puree soup, in batches, adding butter, a little at a time, until incorporated. Return to pan and heat until hot. Correct seasoning. Ladle soup into soup bowls and drizzle with truffle oil.
Tools You May Need
Tools You May Need
Price and stock may change after publish date, and we may make money off
these links.