Abstract: The invention relates to a method for producing a body (7) comprising cellulose with the help of cellulose-producing organisms, which are supplied with a nutrient solution. A particularly uniform structure and density of the cellulose bodies can be achieved when a vessel (1) having a membrane (4) is supplied, said membrane being permeable to the nutrient solution and is substantially impermeable to the organisms, wherein the organisms are cultivated on one side of the membrane (4), where a gas atmosphere prevails, and the nutrient solution is arranged on the other side of the membrane and passes through the membrane (4) in the direction of the organisms, to supply them.