NOVELTY - A method for the reduction of aerosol in an aerosol comprising gas involves contacting the aerosol comprising gas with a liquid, where the aerosol comprises an aerosol compound, the liquid comprises liquid compound and the liquid comprises liquid condensate of the aerosol, where the liquid has a higher temperature than the aerosol comprising gas, and where the temperature difference is 5-200 degrees C, and the liquid has a temperature which is lower than the dew point of the aerosol comprising gas.    USE - For the reduction of aerosol in an aerosol comprising gas such as gas generated during torrefaction process or gasification (claimed) of organic feedstock like biomass or waste.    ADVANTAGE - The method is simple, inexpensive and efficient. The method provides alternative method for aerosol abatement, which further at least partly obviates drawbacks of the prior art processes. The method is relatively simple method with unexpected good results. With the method torrefaction process or gasification of biomass can be performed in a more reliable way. Costs are reduced and congestion in torrefaction or gasification systems is reduced due to the aerosol reduction.    DETAILED DESCRIPTION - A method for the reduction of aerosol in an aerosol comprising gas, involves contacting the aerosol comprising gas with a liquid, where the aerosol comprises an aerosol compound, the liquid comprises a liquid compound and the liquid comprises a liquid condensate of the aerosol, where the liquid has a higher temperature than the aerosol comprising gas, and the temperature difference is 5-200 degrees C, and the liquid has a temperature which is lower than the dew point of the aerosol comprising gas, where difference between the dew point temperature of the aerosol comprising gas and the temperature of the liquid is 5-200 degrees C. An INDEPENDENT CLAIM is included for use of a liquid condensate of an aerosol for scavenging aerosol in an aerosol comprising gas, where the aerosol in the aerosol comprising gas and the aerosol in the liquid condensate are the same.