1. Source ingredients from small businesses in the surrounding region – and advertise this fact! Customers can better accept paying higher prices or buying from a particular range of foods when they know who their purchase is supporting.
2. Less is more: opulent buffets where lots of food is left uneaten are a thing of the past. Sustainable caterers calculate precisely. Transparency is essential here as well: event organisers should inform their guests proactively that the goal isn’t to save costs but to throw out as little as possible.
3. Don’t throw away, reuse. This means using containers made of glass and dishes made of ceramic in place of plastic, aluminium or paper. These must be taken back and washed, but here, too, explicit communication increases guests’ willingness to embrace this practice. Deposit systems can also help.