Chrysanthemum Egg Drop Soup: The Taste of a Nanjing Summer
A Nanjing summer can survive without air conditioning, but not without a bowl of chrysanthemum egg drop soup.
In Nanjing, there’s a wild vegetable that is virtually unknown outside the city, yet in every local household it’s the essential “life-saving soup” of summer. First-time visitors from elsewhere often take a sip and ask with confusion: “Did someone put toothpaste in this soup?” The Nanjing local just smiles: “You don’t get it. This is juhua nao.”
First Things First: It’s Not Wild Chrysanthemum
Many people hear “chrysanthemum brain” and assume it’s some part of a wild chrysanthemum plant. Not at all.
Juhua nao (菊花脑) is its own distinct species, scientifically named Chrysanthemum nankingense — “Nanjing Chrysanthemum.” It was formally classified in 1917 by Zhong Guanguang, a founding figure of modern Chinese botany, in the outskirts of Nanjing. The scientific name says it all: this plant is tied to Nanjing as tightly as the city’s own name.
In the Nanjing dialect, “nao” (脑, literally “brain”) refers to the tender tips of plants — the same way “tou” (头, “head”) works in vegetable names like maltou. It’s also sometimes written as juhua lao (菊花涝) or juhua ye (菊花叶).
It’s not a flower — it’s the young shoots that emerge in spring, carrying a distinctive asteraceae fragrance. Some describe it as Vicks VapoRub, others say mint toothpaste. Those who love it find it refreshing and invigorating. Those who don’t — well, they feel like they’re eating a hygiene product.
A History Since the Song Dynasty
The earliest written record dates back to the Northern Song dynasty. The poet-monk Daoqian, a close friend of Su Shi, wrote in a poem:
Sunflower heart and chrysanthemum brain, weary of sweet and cool (葵心菊脑厌甘凉)
The “chrysanthemum brain” in this line is widely accepted by scholars as referring to chrysanthemum seedlings. Back then it was foraged in the wild, not yet a local food tradition.
By the Ming dynasty, Gao Lian’s养生 classic Zunsheng Bajian (Eight Discourses on Nurturing Life) recorded the method of blanching chrysanthemum seedlings for eating. By the Qing dynasty, local Nanjing texts became very specific: Gan Xi’s Baixia Suoyan listed chrysanthemum shoots alongside wolfberry shoots and shepherd’s purse as the three iconic spring wild vegetables of Jinling (ancient Nanjing). The late-Qing Yecheng Shupu (Vegetable Manual of Yecheng) devoted a special entry:
Wild chrysanthemum tender stalks, excellent in spring and summer, coolness lingering at teeth and cheeks, naturally fragrant and elegant.
“Coolness lingering at teeth and cheeks” — eight characters that perfectly capture that first sip of chrysanthemum soup on a sweltering summer day.
Two Folk Legends
Two oral traditions (not official history) circulate widely in Nanjing about how chrysanthemum entered everyday life:
Yue Fei at Niushou Mountain
During the Southern Song, General Yue Fei’s troops were stationed around Niushou Mountain to resist the Jin army. When food ran out, soldiers foraged chrysanthemum shoots from the hillsides. Afterward, Nanjing locals began actively picking and eating the leaves.
The Siege of Tianjing (1864)
The more widely told story: as Qing forces besieged Tianjing (Nanjing), food inside the city was completely exhausted. Hong Xiuquan ordered the population to forage wild plants called “sweet dew,” and chrysanthemum was the most important among them. After the siege ended, Nanjing residents kept the habit, gradually transitioning from wild foraging to backyard cultivation.
Historians generally believe that wartime famine accelerated the spread of chrysanthemum eating, but didn’t create it. Nanjing, with its long history of warfare, its ancient tradition of foraging wild greens, and the Six Dynasties’ Buddhist vegetarian culture, had already laid the groundwork.
Seven Heads and One Brain
In Nanjing’s seasonal food calendar, the spring-to-early-summer wild vegetables have a proudly local nickname — Seven Heads and One Brain:
| Seven Heads | One Brain |
|---|---|
| Shepherd’s purse, wolfberry shoots, toon shoots, alfalfa shoots, pea shoots, Chinese chive shoots, small garlic shoots | Chrysanthemum Brain |
From March through September, chrysanthemum shoots can be harvested continuously. During peak spring and summer, every stall in Nanjing’s wet markets has bundles of fresh chrysanthemum, still dewy, tied into neat little bunches.
The Supreme Classic: Chrysanthemum Egg Drop Soup
Ask any old Nanjing native how chrysanthemum is best eaten, and you’ll get only one answer: chrysanthemum egg drop soup (菊花脑蛋汤).
The recipe is almost absurdly simple:
- Bring water to a boil
- Drop in washed chrysanthemum tender shoots
- When it returns to a boil, drizzle in beaten eggs
- Add a pinch of salt
- Finish with a few drops of sesame oil
- Serve immediately
No elaborate seasoning, no extra steps. The goal is that pure, clear flavor — nothing more.
I still remember my first sip as a child. I was completely taken aback — that unique coolness really did feel like someone had squeezed toothpaste into the soup. But Nanjing is one of China’s traditional “four furnaces,” and air conditioning was nowhere near as common when I was growing up. On sweltering summer days when the heat killed your appetite, one bowl of chrysanthemum egg drop soup would cool you from your throat all the way down to your stomach, and you’d feel comfortable again. I gradually came to love it. Now summer isn’t complete without several bowls.
Beyond soup, stir-fried or blanched chrysanthemum are also common, but heavy seasoning is almost never used — that distinctive chrysanthemum fragrance is the soul of the dish, and anything strong would simply bury it.
Chrysanthemum Today: A Symbol of Nanjing Identity
Long past its wartime origins, chrysanthemum has become one of the most recognizable symbols of Nanjing’s food culture.
- Year-round supply at every market in the city, plus home-grown pots on countless balconies
- A nostalgia symbol for Nanjing natives living elsewhere — returning home means a bowl of chrysanthemum egg drop soup before anything else
- New creations at local restaurants and tourist spots: chrysanthemum soup dumplings (菊花脑汤包) and chrysanthemum wontons. Many local soup-dumpling chains like Jiming Soup Dumpling (鸡鸣汤包) now feature them on their menus
- Two cultivated varieties — broad-leaf and small-leaf — domesticated over generations from the late Qing and Republican era, when Nanjing residents widely propagated plants from root divisions around their homes
Every Nanjing native I know who has moved away for work does the same thing when they come back: the first thing they ask for isn’t duck (Nanjing’s other famous food) — it’s a bowl of chrysanthemum soup. That cool, clean taste is, for them, the flavor of a Nanjing summer.
If you’ve never tried chrysanthemum, next time you’re in Nanjing, start with a chrysanthemum soup dumpling — if it sits well with you, then find a local restaurant and order a bowl of chrysanthemum egg drop soup. The first sip might make you pause. By the second, you might just get it.