Black truffle oil is usually used at the top of the cooking as a finishing oil. The ratio of oils will rely on personal preference, but typically 1/4 cup of olive oil and a pair of tablespoons of Fresh Perigord Black Truffles truffle oil work well together. Ingredients: Extra virgin olive oil, Finest Truffle Products aroma (tuber magnatum pico). All this is mixed with the sour cream, oil, lemon juice, salt and pepper and organized on the head lettuce leaves, strewn with parsley and garnished with olives. Building off the heritage of Crème Ancienne, which was inspired by the world’s first cream, our quest for precious substances led us to Alba, Italy, to unearth our exclusive white truffle. The only difference between the well-recognized White Button and Cremini Mushrooms is the age. Mushrooms are adaptable, readily available, and may be ready in numerous ways.