1, depending on the color of oil, the color of high-quality oil is dark yellow or light yellow. High-quality rapeseed oil is golden yellow and peanut oil is light yellow, depending on the ingredients.

2. Look at the smell of oil. If there is fishy smell and odor after heating, it is gutter oil.

3. Looking at transparency, high-quality oil has less impurities and high transparency. Finally, the taste, if there is sour or peculiar smell, is inferior oil.

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