Eggyolk Coffee is a cafe on the fifth floor of Trang Tien Plaza in Hanoi, near Hoan Kiem Lake. It specializes in egg coffee, with warm egg coffee, iced egg coffee, and salt coffee as its main menu items. The interior is well air-conditioned and has a clean restroom, along with terrace seating. Seating inside is limited, and the terrace view is less impressive than expected.