FIELD: food industry. SUBSTANCE: method of preparing nutritious mixture involves grinding of fat, protein and carbohydrate components, their mixing with addition of water and mineral additive, heating, and homogenization. In the process of homogenization, introduced are vitamin and enzyme additives, and mixture is dried at temperature not higher 60 C. Then crushing of mixture and its reduction by water before using are carried out. Used in composition of vitamin additive is a preparation produced by means of successive extraction of biomass of Pythium irregulare micromycete with nonpolar extracting agent under above-critical condition, water, alkali, water, acid, water, alkali and water with the following combination of the first extract with hard residue. The preparation is introduced in amount of 0.5% by mass. Drying is conducted without oxygen access. EFFECT: increased quality of final product excluding syneresis of fats during storage life and separating into layers of mixture after its reduction.
