The trial is initially taking place at 77 supermarkets and involves the supermarket’s Ripe & Ready Avocados twin pack.

The plastic-free pack is made from paper with a ‘window’ of bamboo netting. Sainsbury’s said the packaging was fully recyclable at kerbside.

If the trial proves succesful it will be followed by a full rollout, which will remove 20.2m pieces of plastic a year.

Director of product and innovation Claire Hughes commented: “Switching to paper packaging across our Ripe & Ready Avocados twin pack is one of the many steps we are taking to fulfil our commitment towards a greener future.

“The initiative reflects our continuous efforts to help develop more sustainable and innovative packaging solutions and we’re excited for our customers to try out the new packaging in-store.”

Sainsbury’s has made a variety of packaging changes to reduce the amount of plastic packaging it uses, including a switch to mainly paper-based packaging for range of bread products four months ago.

It has also replaced plastic trays with pulp-based and cardboard equivalents.

Own-brand kitchen and toilet rolls are now wrapped in paper instead of plastic.

Sainsbury’s has also implemented a ‘Good to Know’ logo to raise customer awareness about the changes to its packaging and its efforts to reduce plastic.

Sainsbury’s has set a target to become Net Zero across its own operations by no later than 2035.