Away from ingredients and composting, however, one element of keeping it eco is how a place is kitted out.
Light fixtures, wallpapers and crockery can all take an environmental spin. One new place doing cool things in this space is Ichibuns, a Japanese-American diner hybrid in London's Chinatown.
Inspired by the postwar Shōwa era in the 1920s, where both Western and authentic Japanese cultural elements were fused, it's an eclectic gold mine of reused and repurposed furnishings.
Here's the five most innovative things they're doing.
Have you spotted our glorious chandelier that hangs from the first floor through to the ground floor? Our amazing designers, Studio Glitt, were inspired by the traditional Japanese wind chime used to calm and relax! Come see it in Chinatown tonight, we're open 'til 2am! ⛩⛩⛩⛩⛩ #chinatown #ichibuns #windchime #interiors #design #japan #japanese #newrestaurant #fridaynight
1. A wind chime-inspired chandelier hangs between the ground and first floor, while the dining chairs are constructed from repurposed, patterned kimonos.
2. A wall is lined with used Japanese beer cans, which are arranged to spell out "ichiban" (this translates as "first,' or 'number one.' Ichiban = 'good,' ichibuns because the restaurant does great burgers... geddit?)
3. The ceiling is plastered in pages from Manga comics, while the walls are adorned with 50s and 60s movie posters.
4. Wooden boxes, originally used to transport fish from harbours to restaurants, have been re-purposed into plant containers – kitted out with a self-watering system.
5. The bathroom sinks have an interesting past life, having been refashioned from traditional Japanese coal stoves.