Souji

Souji is a Spanish chemical manufacturing company that provides circular economy technology for recycling used cooking oil. The company developed a patented, caustic-soda-free mineral and vegetable-based formula that allows users to transform used vegetable oil into a multipurpose ecological detergent in approximately one minute without hazardous processes or heat. Designed for both domestic use and the professional HORECA (hotel, restaurant, and catering) sector, the product helps mitigate the environmental impact of oil disposal while providing a sustainable cleaning solution. Souji manages operations through its parent company, Samsarapps, S.L., and is headquartered in the Community of Madrid, Spain.

The company serves diverse customers, ranging from individual households to large professional establishments such as hotels, cruise lines, and industrial catering operations. By enabling on-site recycling of cooking oil, Souji addresses critical logistical challenges in waste management, particularly for isolated locations like rural areas or maritime vessels, while helping clients reduce cleaning costs and improve ESG performance. Their professional B2B model integrates specialized hardware and modular systems into existing business operations, validated through pilots with partners like Hilton and other major hospitality groups. Supported by European funding and academic research, Souji offers a scalable approach to sustainability that connects waste management with the production of value-added cleaning products.