Coated fertilizer wherein the fertilizer and animal feed comprises particles coated with a biomass composition comprising 5-35 wt.% solid biomass particles with a D 50 between 0 and 250 µm and 95-65 wt.% oil, a biomass composition wherein the biomass composition comprises solid biomass particles with a D 50 between 0 and 250 µm and a process for the production of a biomass composition wherein a biomass composition comprising solid particles having a D 60 between 100 and 1000 µm is filtrated and the residue is grinded until the solid particles have a D 50 between 0 and 250 µm.