Which Truffle Type is more expensive? The flavour of black truffles is way less pungent and extra refined than that of white truffles. Considered one of the easiest ways to use your newly found British truffles is to pair up some further-virgin olive oil, infused with somewhat grated truffle. I do still buy this protein and general do advocate it however want you to know my few little complaints about it. To serve: Heat the vol au vent for a couple of minutes in a warm oven, place in your serving plate, fill with the mushrooms, high with the pastry circle and garnish with the slivered truffle and parsley leaves.