NOVELTY - Composting organic material involves filling the organic material into a cell that is open from the top and bottom, stands on a solid ground and contains at least one insulated wall element provided with releasable connections, which can be assembled or disassembled through the upper opening of that cell; performing an intensive composting operation on the material using aeration, by flowing air using aerating elements under the cell; and spreading the compost on solid ground by removing the cell from the compost, by lifting or by removing the lateral wall elements.    USE - For composting organic material (claimed).    ADVANTAGE - The cell is transportable and it can be easily removed from the compost by lifting or removing the lateral wall elements and the empty cell can be put onto solid ground and reused again.    DETAILED DESCRIPTION - Composting organic material involves filling the organic material into a cell that is open from the top and bottom, stands on a solid ground, and is transportable, and contains at least one insulated wall element provided with releasable connections, which can be assembled or disassembled through the upper opening of that cell; performing an intensive (thermophylic) composting operation on the material filled into the cell using aeration, by flowing air using aerating elements under the cell; spreading the compost on the solid ground by removing the cell from the compost, by lifting or by removing the lateral wall elements; again putting the empty cell onto solid ground; and repeating another composting operation with the same manner. An INDEPENDENT CLAIM is included for an apparatus used in the compositing comprising a composting cell bordered with heat insulated side walls and a structure to introduce air into the cell from the bottom. The cell is open from the top and the bottom; is formed either consisting of one piece, which can be either lifted, put down or transported, or assembled or disassembled; is positioned on solid ground; and at least one aerating element is mounted under the cell and/or in the bottom part of the cell.