Preparation of a solid flavour composition, a composition, food comprising the composition and a flavour imparting method

A process of preparing a reaction flavour solid composition comprising the step of heating an aqueous slurry containing reaction flavour precursor compounds using microwave radiation to form a reaction flavour and concomitantly drying the slurry to form a reaction flavour solid composition, wherein the aqueous slurry is cast on a belt, which can be fed through a microwave oven disposed in the path of the belt and through which the belt moves, wherein the slurry is heated for a period of time ranging from 1 to 15 minutes, and wherein the slurry is heated to about 100° C. for a period of time to evaporate off most of the water, before heating the slurry to a temperature of up to 125° C.