How to distinguish sesame oil?

Black sesame and sesame oil extraction machine

There are many ways can  distinguish sesame oil which include Water Identification,Color recognition,Identification of freezing,Heating recognition,Odor identification,Shock method,Taste Method and so on.

1. Water Identification: Use chopsticks to dip in a drop of sesame oil into the clear water, pure sesame oil will shows a colorless and transparent thin oil slick, and then cementesd a number of small oil droplets. Adulterated sesame oil slick is small and thick, and difficult to spread;
2. Color recognition: Pour sesame oil from the high place to the cylinder. If splashed oil slick is light yellow, it indicates that the rapeseed oil is mixed with sesame oil. The pure sesame oil is red copper color with very clarity and aromatous. Generally speaking, the color of pressed sesame oil is lighter than ground sesame oil.
3. Identification of freezing: Put sesame oil into refrigerator to freeze, take out and place it in the air for dissolving. Pure sesame oil overall would melt quickly, while poor quality sesame oil dissolves slowly. There will be a significant hard heart during the melted stage.
4. Heating recognition: Heat sesame oil in the pan, it will appear precipitate very soon. But if it becomes white which indicates that the oil is mixed with lard. If it becomes very clear, it indicates the oil is mixed with the rapeseed oil. If it becomes hair muddy, it indicates that the oil is mixed with the rice soup.
5. Odor identification: Take a little oil in the hands for friction, if the oil is along with pure flavor, it is sesame oil. If it is along with beans smell, the oil may be mixed with soybean oil. If the oil is along with spicy flavor, it may be mixed with rapeseed oil.
6. Shock method: Take a bottle of sesame oil to shake gently, if the bubble is transparent and disappears quickly, usually it indicates that  it is pure sesame oil. On the contrary, it is sesame oil of poor quality .
7. Taste Method: When you drink pure sesame oil, you will feel fragrant and sticky, and the taste is a little bitterness. Otherwise, it is sesame oil of poor quality .