A process for producing a bio-inactive and shelf stable biomass matter derived from bioactive biomass feedstock includes processes that can be performed in an effective way with equipment that does not require large expenditures. The biomass feedstock may be dewatered and then stabilized to prevent degradation. The stabilized biomass may then be back blended with a dried back blending biomass having a water concentration of less than 10% and a particle size that produces back blended biomass that can be effectively processed by controlled agitation drying wherein the thickness is maintained at less than 100 mm while an airflow is formed over the back blended biomass and shear mechanical energy is imparted. The entire process may be performed in less than 12 hours to produce a shelf-stable dried biomass.