The American burger chain opened the doors to its one-day pop-up at Columbus Coffee Company in Upper Thomson at 8.55am on May 31, over an hour ahead of the scheduled time. A queue of more than 300 people had formed. READ MORE: https://str.sg/x6JbFollow The Straits Times on YouTube: https://str.sg/ytsubTurn on notifications 🔔 to stay updated.--------------------WEBSITE ➤ https://www.straitstimes.comWHATSAPP ➤ https://str.sg/whatsappTIKTOK ➤ https://www.tiktok.com/@straitstimesINSTAGRAM ➤ https://www.instagram.com/straits_timesFACEBOOK ➤ https://www.facebook.com/TheStraitsTimesTWITTER ➤ https://twitter.com/straits_timesTELEGRAM ➤ https://t.me/TheStraitsTimesPODCASTS ➤ https://str.sg/stpodcasts#straitstimes #innout #singapore