An avocado with smooth, black and edible skin has gone on sale at Marks & Spencer this week.

Called the Midnight Avocado, the variety is said to have a fifth less oil than Hass - which for the consumer translates into fewer calories, countering the popular, if misguided, perception that avocados are fattening.

Midnight Avocado skin is significantly thinner than that of other varieties of avocado, at around 0.2mm. The fruit has a mild aniseed flavour and fits well into the retailer’s ready-to-eat offer.

Midnight Avocado was grown in Chile and airfreighted to the UK.

M&S fruit buyer Peter Ireland said: “The new Midnight Avocado looks appetising thanks to the contrast of the silky, black skin with the green flesh. It’s very easy to prepare and has a delicious, nutty taste.”

The new variety is on-shelf at £1.99 for two.