Sifting in milling can be realized in two different processes with different aims. The first one is the sifting to separate from the pieces in different sizes and foreign matters existing in the grains to be milled. The sifting process is realized in order to categorize the milled grain according to its particle size. It can be said that both sifting processes are effective on the efficiency of the mill and the product quality. Food safety and need for products in high quality require the foreign matters and contaminating materials to be separated properly from the grains to be milled. Likewise, separation of flour from the grinded material and categorization according to particle size are also requirements for a quality and efficient production. Sifting systems in milling seem as two different processes to provide these requirements. A good sifting system can provide order, stability and quality in milling. Because the material cleaned and separated from foreign matters in a most proper and hygienic way is the first step in production of flour in a good quality. As a result, choosing the right equipment is also important for a plant. With a right sifting system preference, high capacity sifting and cleaning, low energy consumption and consistency in sifting process can be obtained. In the Cover Story, you can find the details about sifting systems in milling, the role of sifting on flour production and the effect of cleaners on flour quality.