Costa, one of the nation’s favourite coffee chains, has sent fans into a frenzy after releasing a moreish Frappuccino that will satisfy sweet tooths and coffee lovers alike. But, there is a little catchCosta, one of the nation’s favourite coffee chains, has sent fans into a frenzy after releasing a moreish Frappuccino that will satisfy sweet tooths and coffee lovers alike. But, there is a little catch