Expanation: This is a natural phenomenon of light refraction that occurs when light comes into contact with the fat and iron layer on the surface of the meat, causing the light rays to bend and create a rainbow.

The United States Department of Agriculture (USDA) also confirmed that this rainbow phenomenon can appear not only in beef but also in other types of meat such as pork, fish, bacon and ham when the elements in the meat reflect light under the influence of heat.

Therefore, users do not need to worry too much when they see a piece of sliced ​​meat with a rainbow glow. We can still use this piece of meat as usual in case the piece of meat does not have any other unusual signs such as a rancid smell or poor meat quality.