savings
We convert your used cooking oil into operational value: reduced spending on cleaning products, fewer containers, lower inventory levels, and fewer incidents in daily management.
sustainability
On-site transformation of used vegetable oil into cleaning products, 90% to 96% less polluting than conventional products, with no transport required and minimal energy use: 70% to 96% lower CO₂ emissions and a tangible reduction in plastic waste.
operational capacity
Less reliance on third parties, reduced logistics, and lower storage space requirements. A simple system that ensures day-to-day supply continuity, creating effective, high-performance products that are more environmentally and people-friendly.
transparency
Full traceability of used cooking oil and the products generated: control, records, and audit-ready evidence for ESG reporting, compliance, and regulatory requirements. Strengthens reputation, consistency, and credibility with customers and public authorities.
savings
We convert your used cooking oil into operational value: reduced spending on cleaning products, fewer containers, lower inventory levels, and fewer incidents in daily management.
sustainability
On-site transformation of used vegetable oil into cleaning products, 90% to 96% less polluting than conventional products, with no transport required and minimal energy use: 70% to 96% lower CO₂ emissions and a tangible reduction in plastic waste.
operational capacity
Less reliance on third parties, reduced logistics, and lower storage space requirements. A simple system that ensures day-to-day supply continuity, creating effective, high-performance products that are more environmentally and people-friendly.
transparency
Full traceability of used cooking oil and the products generated: control, records, and audit-ready evidence for ESG reporting, compliance, and regulatory requirements. Strengthens reputation, consistency, and credibility with customers and public authorities.
how it works
This is a unique, modular device manufactured in-house, designed to adapt to any establishment. It automates the transformation of used oil into different cleaning products directly on your premises, with quick implementation and intuitive operation, without disrupting daily operations.
a leap
towards
professiona-
lism
Souj was born eight years ago with a clear purpose: to turn waste into value and prove that a cleaner, more circular world is possible. Two entrepreneurs, a patented formula, and the conviction that sustainability should be practical, everyday, profitable, and real.
After achieving success domestically and receiving national and international recognition, we realized that we could have the greatest impact in the hospitality and professional sectors, which are the largest generators of used oil and most in need of a sustainable alternative.
The European Union backed this vision with the Seal of Excellence and ERDF funds, promoting several years of research and technological adaptation until we developed our professional business models: flexible, scalable, and designed for the real-world operations of hotels, restaurants, and cruise ships.
Souji is a recovery method based on a proprietary chemical formula that transforms used cooking oil into professional cleaning products. The on-site machine is a way of implementing it, not “the product” itself, and we adapt to the needs of each customer.
The key is Souji’s formulation and process. The machine streamlines operations, improves efficiency, and ensures consistent quality—so everything happens on your premises: faster, cleaner, and with less reliance on third parties, through a flexible, easy-to-deploy system.
Depending on your selected plan and requirements, Souji can produce a range of products, for example:
- Laundry detergent
- Multi-surface cleaner
- Manual dishwashing liquid
- Machine dishwasher detergent
- Carpet cleaner and other professional-grade cleaning solutions
In addition, we can tailor the application, fragrance, texture, and color to your specific needs and corporate brand identity.
We offer three approaches, depending on your operations:
- On-site: you process at your facility.
- Mixed: you process part on-site and the surplus is managed externally.
- Centralized: we collect your oil (or surplus), process it on a large scale, and return the finished products to you.
In the mixed model, you choose: we collect the surplus, or you can continue working with your usual manager so you don’t have to change contracts or operations.
Primarily operational efficiency, cost, impact, and control: less logistics, less storage and packaging, greater product availability, and reduced reliance on third parties. It’s also more cost-effective than door-to-door collection and an ideal solution for remote or decentralized locations (islands, cruise ships, mountain areas, or rural environments) where collection is more complex and expensive—providing self-sufficiency and full control.
No worries: with the centralized or mixed model, we collect the UCO (used oil) and deliver the cleaners to you ready to use, maintaining traceability.
It is managed using a mixed model: you transform what you need to cover cleaning consumption, and the surplus can be collected by us for large-scale transformation or managed by your usual manager, whichever suits you best.
Very little: we assess your oil volume and cleaning consumption, define the modality (on-site/mixed/centralized), and set up a simple implementation. We make sure it fits your space, your operations, and your objectives (savings, sustainability, supply).
No. The method is designed to integrate seamlessly. On-site, operations adapt to the pace of the establishment; in centralized mode, you continue as usual and we manage everything. In mixed mode, you can even keep your current manager, avoiding internal changes.
Savings are typically seen in: fewer product purchases, less packaging/stock, less logistical dependence, and improved oil management efficiency. In particular, the on-site model helps reduce recurring costs for cleaning products and avoids logistical overheads compared to door-to-door collection. It is calculated based on consumption and volume.
Yes. Souji offers traceability and control of managed oil and generated or returned products, useful for audits, ESG, and internal policies, providing transparency and operational consistency.
For organizations that generate used cooking oil and consume cleaning products on a recurring basis: restaurants, hotels, cruise lines, catering and institutional kitchens, and industry, among others.
And if you’re a cleaning company or a distributor, we also offer patent licensing options—get in touch and we’ll review the best approach together.
Souji works in 5-liter cycles in less than 10 minutes. If you need more volume, it can be programmed to perform continuous 5-liter cycles automatically, so you can generate exactly what you need, when you need it.
The operation is simple and can be automated: once configured, Souji can chain production cycles to maintain a continuous flow, minimizing intervention and without complicating daily operations.
Souji allows you to scale by programming (continuous cycles) and adapt production to your actual pace, avoiding falling short or oversizing inventory.