In a bid to address this, Tesco has introduced new salad bags with a sliding zip lock, similar to the ones used for family-sized cheese portions, and made from a thicker film to help protect the leaves from damage.
Tesco produce buyer manager Adam Hill said: "Over the last two years we've been working with our growers to develop new packaging which allows customers to return to their bags of salad over a number of days with very little hassle or fuss.
"We know many shoppers roll up their bagged salads after using them once and stick them at the back of their fridges where they are forgotten for days or even weeks. These new bags are made from stronger material to protect the leaves from getting scrunched up - so preventing them from going to waste."
Research conducted by the retailer found that:
- Shoppers do not always buy bagged salads with a meal in mind, which can lead to them being forgotten purchases;
- Current bags are not strong enough to protect leaves and do not seal so salads tend to spill out in the fridge;
- Shoppers believe that air going into a bag once its opened is "bad air" and want a way to stop this occurring.
The move to launch the resealable salad bags has been welcomed by waste reduction body the Waste & Resources Action Programme (WRAP). Its business programmes director Steve Creed said: "We commend Tesco for introducing a new resealable packaging format for their pre-prepared salads which will help in the fight to reduce household food waste."
The new Tesco salads in resealable bags are priced as follows Babyleaf spinach (240g) £1.50; Iceberg lettuce (260g) £1; Sweet and crunchy (370g) £1; Babyleaf salad (140g) £1.50.
The move is part of Tesco’s No Time For Food Waste campaign to tackle food waste at all stages. It has committed to ensuring that no food safe for consumption will go to waste from its UK retail operations by the end of this year.
UK shoppers bought 431 million salad bags in the 52 weeks to April 22 2017 – a 2.7% growth on the previous year.