Eco gum is good. But does it pass the taste test?

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Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter.

The UK consumes four billion pieces of gum a year. The annual global figure is 374 billion. According to market research, most people chew to freshen their breath but some use gum to suppress appetite, aid concentration and relieve stress. It may also assist in mewing – a method of strengthening one’s jawline that’s popular on social media – though scientific…