NOVELTY - Producing jet fuel comprises e.g. generating or providing syngas, converting the syngas to methanol over a methanol-synthesis catalyst, separating the methanol into at least a first stream and a second stream, converting the methanol in the first stream to dimethyl ether, converting the dimethyl ether to at least one jet fuel range hydrocarbon and aromatic using a zeolite catalyst, converting the methanol in the second stream to olefins using a methanol-to-olefins catalyst, and oligomerizing the olefins under conditions which produce olefins in the jet fuel range.    USE - The process is useful for producing jet fuel (claimed).    ADVANTAGE - The process: eliminates the intermediate methanol synthesis stage, thus exhibiting improved efficiency; is cost effective and simple; provides the compositions which are capable of burning in a jet engine without need for being blended with conventional jet fuel; and reduces overall energy intensity and/or reduces the number of processing steps to manufacture renewable jet fuel.    DETAILED DESCRIPTION - Producing jet fuel comprises either: generating or providing syngas, converting the syngas to methanol over a methanol-synthesis catalyst, separating the methanol into at least a first stream and a second stream, converting the methanol in the first stream to dimethyl ether, converting the dimethyl ether to at least one jet fuel range hydrocarbon and aromatic using a zeolite catalyst, converting the methanol in the second stream to olefins using a methanol-to-olefins catalyst, oligomerizing the olefins under conditions which produce olefins in the jet fuel range, optionally isomerizing and/or hydrotreating the olefins in the jet fuel range to form paraffins in the jet fuel range, and isolating products in the jet fuel range obtained from each of the first and second streams and combining these products to provide hydrocarbons in the jet fuel range; or obtaining a source of methanol, converting a first portion of the methanol to dimethyl ether, converting the dimethyl ether to at least one jet fuel range hydrocarbon and aromatic using a zeolite catalyst, converting a second portion of the methanol to olefins using a methanol-to-olefins catalyst, oligomerizing the olefins under conditions which produce olefins in the jet fuel range, optionally isomerizing and/or hydrotreating the olefins in the jet fuel range to form paraffins in the jet fuel range, and isolating products in the jet fuel range obtained from conversion of each of the first and second portions of methanol, and combining these products to provide hydrocarbons in the jet fuel range. An INDEPENDENT CLAIM is also included for a composition comprising either jet fuel produced by the process as above per se, or jet fuel produced by the process as above per se and jet propellant 8, jet propellant A, jet propellant 4 or jet propellant 1.