Indulge in the luxurious flavors of truffle oil with this Thermomix recipe for cream of mushroom soup with truffle oil. The Thermomix helps to blend the mushrooms into a velvety texture while also infusing the soup with the rich aroma of truffle oil. This soup is made with a combination of button mushrooms, cremini mushrooms, and porcini mushrooms. The mushrooms are sautéed with onions, garlic, and thyme to enhance their flavors. Vegetable broth and cream are added to create a creamy and indulgent texture. Drizzle the soup with truffle oil and garnish with fresh chives for an elegant presentation.