Egg Coffee: Hanoi's Whipped Yolk Innovation You Drink with a Spoon
"Ca phe trung" layers frothy whisked egg yolk over dark robusta. Born from a milk shortage, it's now Hanoi's signature coffee drink—served hot or iced, often in a bowl of warm water.
What egg coffee actually is
Egg coffee ("ca phe trung") is robusta coffee topped with a thick, sweet foam made from whisked egg yolk, condensed milk, sugar, and sometimes honey. The foam sits on top like a dense mousse. You eat it with a spoon first, then sip the coffee underneath.
The drink was invented at "Ca phe Giang" in Hanoi when fresh milk was scarce. The cafe's founder substituted egg yolk for milk, whisking it by hand into a frothy cream. The result stuck. Giang is still the most famous spot to try it, tucked down a narrow alley at 39 Nguyen Huu Huan in the Old Quarter.
How it's made
The process: whisk one egg yolk with sweetened condensed milk and granulated sugar until it triples in volume and turns pale yellow. Pour hot robusta coffee slowly over the foam. The coffee sinks to the bottom; the egg cream floats on top.
Traditionally, the egg was hand-whisked, which took time and produced a coarser foam. Only hot versions were possible. Today, electric mixers create a finer, more stable foam, so you'll find iced egg coffee alongside the hot version. The cup often sits in a bowl of warm water to keep the foam from deflating.
The first few spoonfuls taste like coffee-flavored custard. The coffee at the bottom, after filtering through the egg layer, comes out concentrated and slightly sweet.
Image by David McKelvey from Brisbane, Australia via Wikimedia Commons (CC BY-SA)
Variations beyond the original
Once cafes figured out the electric mixer trick, the format expanded. Now you'll see:
- Egg cocoa ("ca cao trung"): same whipped yolk technique, cocoa instead of coffee.
- Egg matcha ("tra xanh trung"): green tea base, egg foam on top.
- Egg mung bean ("dau xanh trung"): sweet mung bean paste drink with egg cream.
All served hot or iced. The egg foam is the constant.
Image by mmmmngai@rogers.com via Wikimedia Commons (CC BY-SA)
Where to drink it
Ca phe Giang (39 Nguyen Huu Huan, Hoan Kiem) is the original. Opened in the late 1940s, still family-run. The alley entrance is easy to miss—look for the small sign near the corner of Hang Gai. Hot egg coffee runs around 30,000-35,000 VND. Opens early (7 a.m.), closes around 10 p.m. Expect a wait on weekends.
Dozens of other Old Quarter cafes now serve their own versions. Some use more sugar, some whisk the foam thinner, some swap in arabica. Giang's version is denser and less sweet than most imitators.
CNN featured egg coffee in a 2018 segment on Hanoi street food, which brought a wave of tourists. If you go to Giang mid-morning on a Saturday, half the crowd will be holding phones.
What to expect
Texture is the point here, not just flavor. The foam is thick enough to hold a spoon upright. It tastes like sweetened egg custard with a coffee aftertaste. The coffee underneath is strong, sometimes bitter if you let it sit too long.
If you don't like eggy desserts or find the idea of raw yolk off-putting, this won't convert you. But if you're comfortable with tiramisu or zabaglione, the concept isn't far off.
Order it hot the first time. The warm version shows the original intent—the foam stays creamy, the coffee stays bitter, and the contrast works. Iced versions are fine but the foam can stiffen and lose some of the mousse texture.
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