A symbol of celebration, Tuber uncinatum (also known as the grey Burgundy truffle) is gathered in Haute-Marne between September and January, in the forests that surround Chaumont. This gem of the woods is popular with gastronomes and adds flavour to the most refined dishes. Truffle discovery breaks, with cavage demonstrations (truffle-hunting with a truffle hound) and cooking lessons are on offer there every Autumn.