Alternative drying methods such as microwave drying could eliminate water with a limited CO2 emission, reaching moisture levels below 10%. Finally, the use of this massively produced bio-based waste that is BSG has attracted the scientific community's interest only recently with a few publications per year in the 80's up to around 330 annually more recently , still timid considering the volumes generated and the low-value valorisation to this date. In 2020, 70% of the BSG was valorised for animal feed, 10 % for the production of biogas, while 20% were eliminated in landfills. This last option to dispose of the BSG waste equates to an environmental impact of CO2 eqv =513 kg/tBSG. It would thus be important to valorise this resource more efficiently by producing higher value products that would encourage breweries to further upcycle this resource.