REFRIGERATED STORAGE
The best way to conserve the characteristics of truffles is to wrap them in absorbent paper (which is then changed daily) or a clean cloth. This should then be placed in an air-tight container and stored in the least cold area of the fridge. If you are planning to make a frittata flavoured with truffles, simply place eggs in the same container as the truffles; the eggs will capture the aroma due to their porous shells.

TRUFFLES IN OIL OR BUTTER
Another option for longer-term conservation of truffles is to cook them in oil in order to make a sauce, which, in the fridge, provides stable conditions for up to a month. Alternatively you can dice black truffles, or slice white truffles, then mix with soft butter and a little salt; store this in the fridge, and you have wonderful truffle butter with which to garnish any dish. Again in this case, the truffles can be kept for a month or so.

FREEZING TRUFFLES
Among the methods of conservation, some recommend freezing truffles. In our experience, this may be a good approach for black truffles that have a strong aroma; however, it should absolutely be avoided for white truffles, as they can lose their fragrance, which in our opinion is criminal.

WASHING
With regards to cleaning truffles, lightly brush the surface with a toothbrush in order to get rid of excess earth. Both black and white truffles should be cleaned just before eating, using a toothbrush, but never with water! This is because fungi are hygroscopic and absorb water very efficiently.