A method for preparing a liquid fiber composition containing grain-based dietary fiber and an aqueous medium, the dietary fiber containing a component not soluble in the medium and a component soluble in the medium, whereby the component not soluble in the medium forms a dispersion with the medium, characterized in that the method comprises the following steps: a) a fiber material is selected, the content of its soluble grain-based dietary fiber being at least 8 % by weight of the dry matter, b) the fiber material is mixed with the aqueous medium to form a mixture, wherein the content of fiber material is over 1 % by weight, and c) a homogenization process is carried out to provide a liquid fiber composition, the total content of its grain-based dietary fiber being at least 1.6 % by weight, and the content of the grain-based dietary fiber that is soluble in the medium is at least 0.8 % by weight, the composition being a liquid dispersion at a temperature of 4°C, wherein the homogenization process of step c) comprises i) a single homogenization at a pressure of at least 260 bar, preferably at least 300 bar, more preferably from 300 to 800 bar, and most preferably from 300 to 600 bar, ii) at least two successive homogenizations, preferably 2 to 30 homogenizations, more preferably 2 to 10 homogenizations, and most preferably 3 to 10 homogenizations at a pressure of at least 150 bar, preferably at least 200 bar, more preferably at least 250 bar, and most preferably at least 300 bar, iii) a continuous recycling through a homogenizer via an intermediate tank, which is to be mixed, so that the volume of the mixture passing through the homogenizer is 2 to 30-fold, preferably 3 to 30-fold with respect to the volume of the mixture fed in, the homogenization pressure being at least 150 bar, preferably at least 200 bar, more preferably at least 250 bar, and most preferably at least 300 bar, or iv) the addition of a fiber material, the content of its soluble grain-based dietary fiber being at least 8 % by weight of the dry matter, in one or more batches to a mixture that has gone through one or more homogenizations, and it is continued by a subsequent homogenization, the homogenization pressure being at least 150 bar, preferably at least 200 bar, more preferably at least 250 bar. a) a fiber material is selected, the content of its soluble grain-based dietary fiber being at least 8 % by weight of the dry matter, b) the fiber material is mixed with the aqueous medium to form a mixture, wherein the content of fiber material is over 1 % by weight, and c) a homogenization process is carried out to provide a liquid fiber composition, the total content of its grain-based dietary fiber being at least 1.6 % by weight, and the content of the grain-based dietary fiber that is soluble in the medium is at least 0.8 % by weight, the composition being a liquid dispersion at a temperature of 4°C, i) a single homogenization at a pressure of at least 260 bar, preferably at least 300 bar, more preferably from 300 to 800 bar, and most preferably from 300 to 600 bar, ii) at least two successive homogenizations, preferably 2 to 30 homogenizations, more preferably 2 to 10 homogenizations, and most preferably 3 to 10 homogenizations at a pressure of at least 150 bar, preferably at least 200 bar, more preferably at least 250 bar, and most preferably at least 300 bar, iii) a continuous recycling through a homogenizer via an intermediate tank, which is to be mixed, so that the volume of the mixture passing through the homogenizer is 2 to 30-fold, preferably 3 to 30-fold with respect to the volume of the mixture fed in, the homogenization pressure being at least 150 bar, preferably at least 200 bar, more preferably at least 250 bar, and most preferably at least 300 bar, or iv) the addition of a fiber material, the content of its soluble grain-based dietary fiber being at least 8 % by weight of the dry matter, in one or more batches to a mixture that has gone through one or more homogenizations, and it is continued by a subsequent homogenization, the homogenization pressure being at least 150 bar, preferably at least 200 bar, more preferably at least 250 bar.