Coffee chain Pret A Manger has launched a line of coffee products for retail for the first time in the UK. Launched in partnership with supermarket chain Waitrose, the line, which will “allow customers to play the role of barista at home”, includes the two core coffees used in Pret’s stores: Pret’s Organic Classic Blend Ground Coffee (200g) which is used for filter coffee; and Pret’s Organic Espresso Beans (450g), …