We spill the tea on the supermarket bags worth your cuppa – and which should be left to stew • The best (and worst) supermarket coffee We spill the tea on the supermarket bags worth your cuppa – and which should be left to stew The best (and worst) supermarket coffee The Guardian’s journalism is independent. We will earn a commission if you buy something through an affiliate link. Learn more . The Guardian’s journalism is independent. We will earn a commission if you buy something through an