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Why Sesame Oil Has a Distinct Aroma — traditional ingredients and practical kitchen guidance
True Grit

True Grit Food Care Desk · 2 min read

Why Sesame Oil Has a Distinct Aroma

Roasting develops compounds unique to sesame, part of why it smells so different from a neutral oil.

Sesame oil's warm, nutty smell comes largely from what happens when the seed is roasted before pressing, developing compounds that a raw, unroasted pressing does not carry to the same degree.

What is actually happening

  • Roasting the seed before pressing develops a set of aromatic compounds unique to sesame, giving the oil its characteristic nutty smell.
  • Oil pressed from raw seed has a much milder aroma, closer to neutral than the deep, toasted smell most people associate with sesame oil.
  • This is the same underlying reason roasted sesame seeds smell so much stronger than raw ones on their own.
  • The aroma is a genuine marker of quality here, a flat or very mild smell on a supposedly roasted pressed oil is worth questioning before you buy it.

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Sesame oil aroma questions

Why does my sesame oil smell milder than expected?
It may have been pressed from raw rather than roasted seed, which naturally gives a much subtler aroma.
Is a strong aroma a sign of good quality sesame oil?
Generally yes, for a roasted pressed oil, a strong nutty smell reflects genuine roasting rather than a flat, underdeveloped pressing.
Does the aroma fade with storage?
It can soften somewhat over time, particularly if the oil is not kept sealed and away from light and heat.
Is the aroma from roasting or from the seed itself?
Both play a part, but roasting develops the aroma much more fully than the raw seed carries on its own.

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