Waitrose is experimenting with a biodegradable tomato punnet made from tomato plant waste and recycled cardboard pulp.
Launched in selected branches this week, the punnets are used for Waitrose Duchy Organic cherry tomatoes and baby plum tomatoes.
If successful, they will be rolled out to further branches in 2018 and could potentially save 3.5 million plastic trays a year, according to the retailer.
Its head of fresh produce Nicola Waller said: "This builds on our commitment to ensure that all our own-label packaging is widely recyclable (using the widely recycled logo), reusable or home compostable by 2025."
Since 2009, Waitrose has reduced packaging across all products by nearly 50%, it said.
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