There's an egg in your coffee!
Yes, you read that correctly, ca phe trung is a Vietnamese coffee specialty with a whipped and sugared egg. It's frothy and delicious. The coffee shop at 11 Hang Gai in Hanoi
's old quarter is also a fantastically well kept secret (or maybe not anymore). But it does entail a little investigating and gut-instinct to find, although once there the charm and lake views are well worth it.