Method for producing an extract containing gallic acid, comprising the steps a) providing, in particular dried and/or, in particular and, comminuted, plants or plant components containing tannins, in particular tannic acid, wherein the provided plant comprises or is a sumac plant and wherein the plant components comprise or are leaves, wood, bark, seeds, roots and/or fruits of sumac plants, b) providing the enzyme tannase, c) providing ethanol, d) optionally comminuting or further comminuting, respectively, of the plants or plant components according to step a), e) extracting the, in particular comminuted, plants or plant components obtained according to step a) and/or d), in particular or, with water in the presence of the enzyme tannase to obtain a product mixture containing gallic acid, f) separating the, in particular comminuted, plants or plant components from the product mixture obtained according to step e), in particular following step e), and g) evaporative concentrating of the product mixture containing gallic acid obtained according to step e) or f), in particular following step e) or f) and/or before step h), and h) treating the product mixture according to step e) or f) with ethanol and treating the product mixture according to step e) or f) or g) with heat for the deactivation of the enzyme tannase and for the denaturing and precipitation of proteins and/or polysaccharides, and i) filtering the treated product mixture according to step h), and j) removing the ethanol added in step h) from the treated product mixture according to step h) or the filtered product mixture according to step i), k) evaporative concentrating of the aqueous extract containing gallic acid obtained according to step j) to obtain an aqueous concentrate, wherein ethanol is added in step h) in an amount in the range from 20 to 65 percent by weight, based on the total weight of the ethanol and the water or the aqueous system, respectively. a) providing, in particular dried and/or, in particular and, comminuted, plants or plant components containing tannins, in particular tannic acid, wherein the provided plant comprises or is a sumac plant and wherein the plant components comprise or are leaves, wood, bark, seeds, roots and/or fruits of sumac plants, b) providing the enzyme tannase, c) providing ethanol, d) optionally comminuting or further comminuting, respectively, of the plants or plant components according to step a), e) extracting the, in particular comminuted, plants or plant components obtained according to step a) and/or d), in particular or, with water in the presence of the enzyme tannase to obtain a product mixture containing gallic acid, f) separating the, in particular comminuted, plants or plant components from the product mixture obtained according to step e), in particular following step e), and g) evaporative concentrating of the product mixture containing gallic acid obtained according to step e) or f), in particular following step e) or f) and/or before step h), and h) treating the product mixture according to step e) or f) with ethanol and treating the product mixture according to step e) or f) or g) with heat for the deactivation of the enzyme tannase and for the denaturing and precipitation of proteins and/or polysaccharides, and i) filtering the treated product mixture according to step h), and j) removing the ethanol added in step h) from the treated product mixture according to step h) or the filtered product mixture according to step i), k) evaporative concentrating of the aqueous extract containing gallic acid obtained according to step j) to obtain an aqueous concentrate,