Truffle oil

Truffle oil (olive oil with Tuber melanosporum).

Truffle oil is a modern culinary ingredient, used to impart the flavor and aroma of truffles to a dish. Most truffle oils are not made from actual truffles, but are a synthetic product that combines a thioether (2,4-dithiapentane), one of numerous organic aromas or odorants found in real truffles, with an olive oil or grapeseed oil base. As with pure olive oils, these range from clear to cloudy, and yellow to green.

Truffle oil is commonly used to make "truffle fries," which feature French fries tossed in truffle oil, Parmesan cheese, pepper, and sometimes other ingredients. Some pasta dishes and whipped dishes such as mashed potatoes or deviled eggs incorporate truffle oil.

Truffle oil, available in all seasons and steady in price, is popular with chefs (and diners) because it is significantly less expensive than actual truffles, while possessing some of the same flavors and aroma. The emergence and growth of truffle oil has led to an increase in the availability of foods claiming to be made with or flavored with truffles, in an era when the price of truffles has pushed them out of reach for most diners. "Their one-dimensional flavor is also changing common understanding of how a truffle should taste," Daniel Patterson complained in a New York Times article. Chef Gordon Ramsay has described white truffle oil as "one of the most pungent, ridiculous ingredients ever known to chef." However, Heston Blumenthal owner and head chef on The Fat Duck uses it in some recipees.^{[citation needed]}