NOVELTY - Partial gasification of solid organic feedstock, comprises obtaining a tar-containing carbonization gas from the feedstock by low-temperature carbonization in a low-temperature gasifier (1), and converting carbonization gas by partial oxidation and subsequent partial reduction in a high-temperature gasifier (2) to form a synthesis gas; and separating the pyrolysis coke produced during carbonization in the low temperature gasifier from tar-containing carbonization gas and at least partly supplied to the high-temperature gasifier to support the reduction.    USE - The method is useful for partial gasification of solid organic feedstock (claimed).    ADVANTAGE - The method optimizes pyrolysis coke quality and quantity; and allows compensation of a fluctuating demand for pyrolysis coke in a simple manner.    DETAILED DESCRIPTION - Partial gasification of solid organic feedstock, comprises obtaining a tar-containing carbonization gas from the feedstock by low-temperature carbonization in a low-temperature gasifier (1), and converting carbonization gas by partial oxidation and subsequent partial reduction in a high-temperature gasifier (2) to form a synthesis gas; and separating the pyrolysis coke produced during carbonization in the low temperature gasifier from tar-containing carbonization gas and at least partly supplied to the high-temperature gasifier to support the reduction. The pyrolysis coke remains in a pressure atmosphere, in which the same or higher pressure prevails, and the temperature is same as in the low-temperature gasifier. An INDEPENDENT CLAIM is also included for a plant for carrying out the above mentioned method comprising a low temperature gasifier, a high-temperature gasifier, a gas cooling device (3), a dust collector device (4) and a gas cleaning device (5).    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of the plant.    Low-temperature gasifier (1)    High-temperature gasifier (2)    Cooling device (3)    Dust collector device (4)    Gas cleaning device (5)