That's because the rapeseed substance in Luzhou-flavor rapeseed oil is the seed of plants, which generally contains some seed phospholipids. When the oil passes through high temperature, impurities will reach the floating point of the oil.

So there will be some bubbles, which will not affect the quality. Without these bubbles, this fragrant vegetable oil may not have that unique fragrance, so please feel free to eat.

It is also possible that the inner surface of the edible oil contains impurities, and the edible oil contains certain moisture, or simply preheating the edible oil will produce certain bubbles.

Extended data:

Heat transfer of oil

Make dishes look fresh or crisp. In the cooking process, grease is widely used as a heat transfer medium. Because of the high ignition point of oil, heating can speed up cooking, shorten the cooking time of food and keep the raw materials fresh and tender. Proper control of heating time and oil temperature can also make dishes crisp and rosin crisp, so it is often used for cooking.

Improve the color of dishes

Oil can make dishes appear different colors. For example, when making hanging and shaped dishes, fried or fried dishes will show different colors, such as white, gold and crimson, due to different oil temperatures.

The temperature of oil can be 1 times higher than that of water or steam, which can quickly disperse the water on the surface and inside of raw materials, and oil molecules penetrate into the inside of raw materials, making dishes emit attractive aromatic smells, thus improving the flavor of dishes. The inner chain of sesame oil (sesame oil) has a special flavor, which plays a great role in improving the flavor and quality of dishes.

Increase nutrition

In the cooking process, because the fat permeates into the tissues of raw materials, it not only improves the flavor of dishes, but also supplements the nutritional components of some low-fat dishes, thus improving the calories of dishes, that is, the nutritional value.