NOVELTY - A composition comprises a starch-based binding agent and at least one saturated long chain fatty acid having an aliphatic chain length of at least 12C atoms, or its analogues, where the ratio of starch-based binding agent to the saturated long chain fatty acid is 1:200 to 1:3.    USE - In the compression or compaction process to obtain solid fuel bodies; for manufacturing compressed or compacted solid fuel bodies (claimed) e.g. pellets or briquettes.    ADVANTAGE - The composition is free-flowing powder, and it prepares fuel pellets having improved binding properties at higher throughput and lower energy costs. The long chain saturated fatty acids or alcohols reduce frictional forces during pelletization and thus conveniently reduce energy consumption, or increases production rates. These lubricating aids also increase the binding properties and reduce the abrasion in terms of fines content of the pellet. The combination of starch-based binding agent and the lubricating aid composition yields excellent binding properties and reduced fines. The melting point or range of the fatty acid is significantly high to achieve easy blending without the difficulties associated with prior art soft or liquid materials.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) manufacturing (P1) compressed or compacted solid fuel bodies involving mixing a) plant origin materials with b) a starch-based binding agent (0.1-10, preferably 0.1-3 wt.%), based on the total weight of the solid fuel body, and c) a composition containing at least one saturated long chain fatty acid (at least 60 wt.%) having an aliphatic chain length of at least 12C atoms, and/or its analogues (the weight percentage based on the total weight of composition), where the fatty acids and/or analogues have a melting point or melting range of 40-95 degrees C, the weight ratio of (c) to (b) is 1:200 to 1:3, the mixing of (a), (b) and (c) is performed at a temperature below the melting point or melting range, and the mixture of (a), (b) and (c) is subjected to compression or compaction at a temperature above the melting point or melting range;    (2) a solid fuel body obtainable by the process (P1), where the fuel body comprises at least one saturated long chain fatty acid, and a starch-based binding agent (preferably starch, flour and/or meal); and    (3) a kit-of-parts comprising b) a starch-based binding agent, and c) a composition containing at least one saturated long chain fatty acid (at least 60 wt.%) having an aliphatic chain length of at least 12C atoms, and/or its analogues, where the weight ratio of (b) to (c) in the kit ranges between 1:200 and 1:3.