To start with:

• Prefer certified suppliers
• Ask them for a standard evaluation such as Ecovadis
• Evaluate their sustainable practices

Detail sustainable factors to be included in the specifications. These would be the same criteria you would apply for your own company:

• Prefer local produces, and partner with local communities in order to limit transport and logistics
• Prefer short food supply chain
• Buy Certified Products (see ecolabels in Singapore)
• Buy in Bulk. At least, require from your supplier to limit the packaging whenever possible
• Integrate side effects such as deforestation and deterioration of natural ecosystems for your raw materials
• Track food waste
• Prevent Food Waste with last-minute deals
• Donate surplus food
• Donate food waste to feed animals
• Convert food waste into industrial usage
• Install on-site food waste treatment system or contract off-site treatment with specialists
• Avoid single-use crockery/utensils
• Make recycling easy for consumers
• Choose Green Cleaning Products
• Monitor and reduce energy consumption
• Repair / buy second hand / resell equipment, furniture, fixtures
• Opt for energy efficient equipment

Include sustainable choice criteria in the suppliers' offers analysis from 10 to 20% of the total scoring.

See more details in the Food & Drink Sourcing sub-category and in the General Equipment sub-category.