Jamie Oliver's restaurant group has signed up to sell an ethical brand of cola.
His Jamie's Italian and Barbecoa restaurants will offer Karma Cola from next week, but Oliver has stopped short of replacing Coca-Cola, which will still be offered at the eateries, the Daily Mail reported.
Karma Cola, founded in New Zealand in 2012, is promoting its Karma Cola Sugar Free, launched this month, with the words "drink no evil".
The celebrity chef made headlines earlier last year when he said he would campaign to stop Coca-Cola being a sponsor of the Olympics.