2,4-Dithiapentane
Encyclopedia
2,4-Dithiapentane is an organic compound known to be an important component of truffle flavor. It is used as a primary aromatic ingredient in truffle oil
Truffle oil
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 , one of numerous organic aromas or odorants found in real truffles, with an olive oil...

when combined in an olive oil base.
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