Why is sesame oil so fragrant? What kind of sesame oil has the best quality?

Sesame oil is made from sesame, which contains sesamin. When frying sesame oil, sesamin is decomposed into sesamol and some aromatic compounds, so the fragrance of sesame oil is very strong. The sesame oil with good quality is reddish or reddish with yellow, and the ground sesame oil is slightly dark in color and is a brown-red transparent oily liquid. Its fragrance is mellow, rich and unique. Gently shake the sesame oil bottle, there will be bubbles in the bottle, which is transparent and will soon disappear.