You've probably never tasted truffles.
I always hated the taste of truffles, or so I thought. It turns out nearly everything sold out there as containing truffles or truffle oil is just some cheap petroleum-derived product. And that includes in many higher-end restaurants.
Real truffles are incredibly rare and expensive:
Winter white truffle, or noble white truffle, is the most expensive and prized truffle. It can be found only in late autumn and winter, no earlier than September 15, no later than the end of January. The world's most famous winter white truffles are found in Alba, Italy, and Croatian Istria is also known for them.
Depending on how well the season was, this truffle can go for thousands of euros. In the case of large, first-class white truffles, the price per kilo comes close to 10,000 euros.
Maybe one day I'll taste the real thing and maybe I'll like it. Until then I'll keep avoiding anything with truffle in its name.