1. PowerPoint 3 Sarah’s salad

2. Sarah’s salad Garlic Origin: China (5000 food miles)
Potential issues: garlic is sprayed with chemicals to keep it white - how consumers prefer it.
Beef
Origin: Argentina (11,000 food miles)
Potential issues: to produce 1lb of factory-farmed beef uses about 1800 gallons of water and 7lb of grain.
Iceberg lettuce
Origin: Spain (1000 food miles)
Potential issues: lettuce requires constant refrigeration during transport and storage, and uses lots of water in a water-poor country.
Spring onion
Origin: Egypt (2600 food miles)
Potential issues: if only the small white part of the onion is used, the rest is wasted. Salad onions do not grow in the UK in winter so must be imported.
Red chillies
Origin: Kenya (5200 food miles)
Potential issues: chillies can come individually packaged in plastic. They are a non-traditional crop in Kenya grown purely for export.
Ginger
Origin: China (5000 food miles)
Potential issues: pesticides are used to kill insects that attack ginger as it grows.
Photo © zstock/Shutterstock.com

3. What makes food sustainable?
It is not easy to define sustainable food, but the following factors are generally accepted as making our food more sustainable:
less packaging
little waste
lower meat consumption levels, or ensuring high-welfare meat
using seasonal produce
buying local; fewer food miles
using Fairtrade products; ensuring fair deals for producers or poverty reduction guarantees
‘grow your own’
using only sustainable fish sources
buying organic produce; grown without chemical fertiliser or pesticide
ensuring food is healthy and contributes to a balanced diet.