SEM is a zero-waste restaurant in Lisbon, built as a working proof of a better food system.
The kitchen doesn't just minimise waste — it eliminates it. Every ingredient that enters the building is used in its entirety. Roots, stems and offcuts are fermented, preserved, smoked or dehydrated into the flavours of future dishes, so the menu is always cooking for now and for later. What can't be eaten is composted on-site and returned to the soil.
The menu itself is dictated by what regenerative farmers are growing, not by a calendar. Micro-seasons shape the offering, not quarterly changes. Wild and foraged ingredients run through every course. The kitchen works to an 80:20 ratio of vegetables to animal protein, sources from local Portuguese producers, and keeps its supply chain over 90% plastic-free. No fish from the sea — only freshwater and invasive species, like Zander.
A restaurant that responds to the needs and offers of the landscape it exists in.
This isn't a statement about the broken food system. It's a prototype of what a working one looks like.
SEM opened in 2021. The name — sem, "without" in Portuguese — traces a direct line to Silo in London, where chef George McLeod trained under Douglas McMaster, and where the world's first zero-waste kitchen was built. Alongside Lara Espirito Santo, whose background is in social and environmental development, George has created a fine-dining experience recognised by the Michelin Guide, awarded One Knife at the 2024 Best Chef Awards, One Sun in the Repsol Guide, and Three Stars at the Sustainable Restaurant Association's Food Made Good Awards.