Eggyolk Coffee is a small cafe in a Hanoi alley that serves egg coffee, salt coffee, and cold brew. The egg coffee combines a thick egg cream with a strong egg flavor, and matcha egg and egg cocoa are also available. There is a loft seating area on the second floor, and the window seats on the first floor are good for taking photos. The interior is air-conditioned, and the drink portions are on the small side.