For the ice cream: 1 day earlier than you plan on making the custard, reduce the black winter truffle in half and place in an airtight container with the entire eggs. It has many similarities with the taste of the black truffle, although its flavour is less intense. With a extra herby, garlic style than its white truffle counterpart black truffle oil could be used in a similar method so as to add a depth of flavour to a lot of dishes. Sarlat's chefs also give cookery demonstrations and programs where you possibly can discover ways to cook the gastronomic specialities of Périgord. Created by the Black Périgord Truffle Producers' Group and the city of Sarlat, the Truffle Festival has turn out to be an unmissable occasion in the area. The main restaurants in the town have stands on Place de la Liberté, where they provide samples of "Croustous", a sort of Périgord tapas with truffle and foie gras. 3. I have a little potato scrub brush like your truffle scrub brush. Even two. Ten.