Heat olive oil and butter in a large skillet over medium heat. Add the shallot and cook until softened, about 3 minutes. Add the mushrooms and cook, stirring often, until the liquid has been released and they are soft, 8 – 10 minutes. Add garlic and cook, stirring, for 30 seconds. Add the San-J No Soy Tamari and flour. Cook, stirring for 1 minute. Add the herbs and broth and let simmer for about 20 minutes or until thickened, stirring often. Remove the herb stems and season to taste with salt and pepper.