Why is butter so expensive?

In Poland we have a surplus of milk production, which we need to export to external markets in the form of dairy products. The price that farmers get for milk at the store is small. In contrast, the price of a cube of butter in the store is high. What is the reason for this situation was told by Andrzej Parzonko, Ph.D., professor at the Department of Economics and Organization of Enterprises at the Institute of Economics and Finance at the Warsaw University of Life Sciences.