Which side to put the foil on?

Sometimes the thoughts of the cook are busy with a strange question - which side to put the foil on a baking sheet?

Indeed, the foil has one side withmatte, and the other with a shiny shade. The external difference is noticeable, but only the device can determine the practical difference. Reflectivity of the glossy side is 88%, and matte 80%.

Proceeding from this, we can say that a simple cook does not care which side of the foil will be turned towards food.