Method for adjusting the dry matter content in curd in a device for centrifugally separating a starting product into curd and whey, wherein the device comprises a nozzle separator and wherein the method is characterized by the following steps: a. feeding the starting product into a nozzle separator of the device via a feed line while determining a content of dry matter and/or protein, and determining, in particular measuring, the mass flow (ṁ1) of the starting product; b. centrifugal separation of the starting product by the nozzle separator into a whey fraction and a curd fraction; c. separate discharge of the whey fraction and the curd fraction from the nozzle separator and determination, in particular measurement, of the mass flow (ṁ2) of the whey fraction; and d. adjusting the mass flow (ṁ1) of supplied starting product as a function of the values determined in steps a and c, wherein a determination of the dry matter content and/or the protein content of the curd fraction is carried out on the basis of the determined mass flow of the starting product and the mass flow of the whey fraction and the determined dry matter content and/or protein content of the starting product characterized in that the mass flows (ṁ1, ṁ2) of the starting product introduced into the nozzle separator and of the whey fraction discharged are determined and the mass flow (ṁ3) in the discharge line of the curd fraction is calculated therefrom and, in that this determined mass flow (ṁ3) in the discharge line is used as a value for determining a manipulated variable for automatically controlling the feed quantity of the output product and wherein the device has a control element for setting the mass flow of the output product, which is arranged along the feed line. a. feeding the starting product into a nozzle separator of the device via a feed line while determining a content of dry matter and/or protein, and determining, in particular measuring, the mass flow (ṁ1) of the starting product; b. centrifugal separation of the starting product by the nozzle separator into a whey fraction and a curd fraction; c. separate discharge of the whey fraction and the curd fraction from the nozzle separator and determination, in particular measurement, of the mass flow (ṁ2) of the whey fraction; and d. adjusting the mass flow (ṁ1) of supplied starting product as a function of the values determined in steps a and c, wherein a determination of the dry matter content and/or the protein content of the curd fraction is carried out on the basis of the determined mass flow of the starting product and the mass flow of the whey fraction and the determined dry matter content and/or protein content of the starting product characterized in that the mass flows (ṁ1, ṁ2) of the starting product introduced into the nozzle separator and of the whey fraction discharged are determined and the mass flow (ṁ3) in the discharge line of the curd fraction is calculated therefrom and, in that this determined mass flow (ṁ3) in the discharge line is used as a value for determining a manipulated variable for automatically controlling the feed quantity of the output product and wherein the device has a control element for setting the mass flow of the output product, which is arranged along the feed line.