Step 1 : Introduction to the question "What are truffles?"
...a strong-smelling underground fungus that resembles an irregular, rough-skinned potato, growing chiefly in broadleaved woodland on calcareous soils. It is considered a culinary delicacy and found, especially in France, with the aid of trained dogs or pigs. 2. a soft sweet made of a chocolate mixture, typically flavoured with rum and covered with cocoa.