SINGAPORE, May 3, 2024 /PRNewswire/ -- Luckin Coffee debuted its latest Single Origin Espresso (SOE), the Luckin Black Cup Sumatra Gayo series, today, inviting coffee aficionados to savour its exceptional taste and distinctive flavour. Indulge in the exquisite flavour of Sumatra Gayo beans, handpicked and crafted under the guidance of the World...