Rainbow Sweet Bean Ang Ku Kueh (S$6.50/ 2pcs)
Found a small kiosk outlet at @plazasingapura

Ji Xiang Ang Ku Kueh
Address 🛖 : Kopitiam, 68 Orchard Road, # 06-15 Plaza Singapura, Singapore
Open 🕰 : 11am - 8pm