Process for the production of a low-viscosity starch product comprising the following first step and subsequent second step: a) in the first step, native starch is subjected to a1) an acid-heat treatment wherein - the native starch is adjusted to a moisture content of 19 to 21 wt.-%, - 0.5 to 3 wt.-% of a diluted aqueous acid solution are added, wherein the acid concentration is 4 to 10 wt.-%, based on the total weight of the aqueous acid solution, in order to obtain an acid treated starch, - drying the acid-treated starch to a moisture content of below 6 wt.-%, based on the total weight of the acid-treated starch, - heating to a temperature within the range of 105 °C to 180 °C for a time period of 10 to 150 min, - adjusting the moisture content to 12 to 20 wt.-%, based on the total weight of the acid-heat treated starch, or a2) a heat-moisture treatment at a temperature of 105 °C to 120 °C for a time period of more than 10 hours at a moisture content of the native starch of 21 to 29 wt.-%, based on the total weight of the native starch, followed by adjusting the moisture content to 16 to 20 wt.-%, based on the total weight of the heat-moisture treated starch, in order to obtain an intermediate starch product having a content of reducing sugars of less than 3 wt.-%, based on the total weight of the intermediate starch product, and a cold water solubility of less than 90%, in particular less than 50 %, b) in the second step, subsequent to the first step, the intermediate starch product is subjected to an extrusion process in an extruder, preferably a twin screw extruder, in order to obtain the low-viscosity starch product, wherein the low-viscosity starch product has an end viscosity measured according to the Brabender method of less than 50 BU, a content of reducing sugars of less than 3 wt.-%, and a cold water solubility of 100 wt.-%. a) in the first step, native starch is subjected to a1) an acid-heat treatment wherein - the native starch is adjusted to a moisture content of 19 to 21 wt.-%, - 0.5 to 3 wt.-% of a diluted aqueous acid solution are added, wherein the acid concentration is 4 to 10 wt.-%, based on the total weight of the aqueous acid solution, in order to obtain an acid treated starch, - drying the acid-treated starch to a moisture content of below 6 wt.-%, based on the total weight of the acid-treated starch, - heating to a temperature within the range of 105 °C to 180 °C for a time period of 10 to 150 min, - adjusting the moisture content to 12 to 20 wt.-%, based on the total weight of the acid-heat treated starch, or a2) a heat-moisture treatment at a temperature of 105 °C to 120 °C for a time period of more than 10 hours at a moisture content of the native starch of 21 to 29 wt.-%, based on the total weight of the native starch, followed by adjusting the moisture content to 16 to 20 wt.-%, based on the total weight of the heat-moisture treated starch, in order to obtain an intermediate starch product having a content of reducing sugars of less than 3 wt.-%, based on the total weight of the intermediate starch product, and a cold water solubility of less than 90%, in particular less than 50 %, a1) an acid-heat treatment wherein - the native starch is adjusted to a moisture content of 19 to 21 wt.-%, - 0.5 to 3 wt.-% of a diluted aqueous acid solution are added, wherein the acid concentration is 4 to 10 wt.-%, based on the total weight of the aqueous acid solution, in order to obtain an acid treated starch, - drying the acid-treated starch to a moisture content of below 6 wt.-%, based on the total weight of the acid-treated starch, - heating to a temperature within the range of 105 °C to 180 °C for a time period of 10 to 150 min, - adjusting the moisture content to 12 to 20 wt.-%, based on the total weight of the acid-heat treated starch, or - the native starch is adjusted to a moisture content of 19 to 21 wt.-%, - 0.5 to 3 wt.-% of a diluted aqueous acid solution are added, wherein the acid concentration is 4 to 10 wt.-%, based on the total weight of the aqueous acid solution, in order to obtain an acid treated starch, - drying the acid-treated starch to a moisture content of below 6 wt.-%, based on the total weight of the acid-treated starch, - heating to a temperature within the range of 105 °C to 180 °C for a time period of 10 to 150 min, - adjusting the moisture content to 12 to 20 wt.-%, based on the total weight of the acid-heat treated starch, or a2) a heat-moisture treatment at a temperature of 105 °C to 120 °C for a time period of more than 10 hours at a moisture content of the native starch of 21 to 29 wt.-%, based on the total weight of the native starch, followed by adjusting the moisture content to 16 to 20 wt.-%, based on the total weight of the heat-moisture treated starch, in order to obtain an intermediate starch product having a content of reducing sugars of less than 3 wt.-%, based on the total weight of the intermediate starch product, and a cold water solubility of less than 90%, in particular less than 50 %, b) in the second step, subsequent to the first step, the intermediate starch product is subjected to an extrusion process in an extruder, preferably a twin screw extruder, in order to obtain the low-viscosity starch product, wherein the low-viscosity starch product has an end viscosity measured according to the Brabender method of less than 50 BU, a content of reducing sugars of less than 3 wt.-%, and a cold water solubility of 100 wt.-%.