
Ingredients 1 tablespoon good essential olive oil 3 cups chopped yellow onions (3 onions) 1 teaspoon chopped fresh thyme leaves 2 teaspoons kosher salt 1 teaspoon freshly ground pepper 3 tablespoons Worcestershire sauce 1/3 cup canned chicken stock or broth 1 tablespoon tomato paste 2 1/2 pounds