I have tried truffles! Well, to be more precise, black truffle oil and truffle salt (which is rumored to not actually have proper truffles... but I digress). I will admit that making these mashed potatoes was my first time ever smelling, tasting, and cooking with truffle oil and salt. What an experience!The truffle is actually the fruiting body of an underground mushroom and can be found within the leaf litter and the soil around certain types of trees.