Yield, productivity in other words, is one of the significantly important and also controversial topic of milling. Yield, which can be defined as the percentile used for the flour production from cleaned wheat, is a process that directly affects the production amount. Thus, millers want to benefit from the wheat with the highest possible level. Flour yield is one of the most important and controversial topics in the milling industry. Yield, which can be defined as the percentile of the wheat amount used for flour, is a process that directly affects the production amount. Thus, millers want to benefit from the wheat with the highest possible level. However; this process affects quality as well. Because yield can increase the ash amount in the flour and this affcets the four quality adversely. Thus, many methods and technologies are used in order both to maintain a specific standard for quality and increase the yield rate. However; despite all these, millers cannot reach the required yield and flour quality most of the times due to various reasons. Even though it seems possible to reach a yield rate of 80-85% in theory, it can be achieved only with a rate of 60-75% in practice.