Categories: Vegetarian, Gluten-free*use a long gluten free pasta, Quick and Easy, Season: Autumn This is a very simple yet extremely decadent dish. White truffle is one of the most rare and expensive foods in the world. That said, even as a student I was able to find a GBP20 truffle to indulge myself. Please do not substitute truffle oil for this recipe, it cannot compare. Most traditional dishes featuring the white truffle are fat based, typically butter or egg yolk and are neutral in flavour to allow the flavour of the white truffle to shine through.