What is Ssukgat?

Ssukgat is the edible leaf of the crown daisy (Glebionis coronaria), a soft, aromatic green used every day in Korean kitchens. You meet it most often in hot pots, in clear fish and beef soups, in stews, and blanched and dressed as namul (a seasoned vegetable side dish). It is treated as a food first and a home remedy second.

In Korean home tradition the leaf is eaten for a heavy, bloated stomach, for coughs and chest tightness in cold weather, and as a calming, warming green. The taste is strongly aromatic, a little bitter, and it is usually added at the very end of cooking so the scent survives.

On evidence: there are no published human trials testing crown daisy for any health condition. What exists is laboratory and animal work on its plant compounds, plus nutrition data showing it is a good source of vitamins and minerals. Long traditional use is not the same as proof that something treats a condition, and that difference applies to everything on this page.

How does Ssukgat work?

Most of what ssukgat does for you is simply what a leafy green does. It gives you fibre, water, potassium, folate, vitamin K and carotenoids (plant pigments your body turns into vitamin A) for very few calories.

The strong smell comes from volatile oils in the leaf. Traditional use links that aroma to easier digestion and a looser chest, but no study has shown that this happens in people.

Laboratory studies report that extracts of the leaf contain antioxidants (compounds that mop up reactive molecules in a test tube). That is a finding in glassware and in animals. It has not been shown to change any health outcome in a person.

What forms does Ssukgat come in?

Ssukgat is almost always sold and used as fresh whole leaves and stems. You may also meet it as:

Fresh bunches in Korean and other East Asian groceries, sold with roots or cut.

Blanched and frozen leaf, used for soups and namul out of season.

Seeds and seedlings for growing at home, where it is a fast, cool-season crop.

Dried leaf tea and powdered leaf, sold by some herb suppliers. These are far less common and have no dosing research behind them.

Where it comes from:

Crown daisy grows wild around the Mediterranean and was carried east, where it became a vegetable rather than an ornamental flower. It has been eaten in Korea for centuries as ssukgat, in Japan as shungiku and in China as tonghao.

In Korean cooking it is a fixed partner to fish stews, hot pots and beef broth. In folk use it was eaten for a bloated stomach, for a stubborn winter cough and as a general strengthening green. Its standing is that of a well-loved staple food with a modest home-remedy record.

What does Ssukgat help with?

• General nutrition and adding vegetables to your diet: This is the clearest reason to eat it. A cupful of cooked ssukgat gives you fibre, folate, potassium, vitamin K and beta-carotene for very few calories. That is ordinary vegetable nutrition rather than a treatment for any illness.
• Constipation and sluggish digestion: Eating more vegetable fibre and water helps many people move their bowels more easily, and ssukgat contributes both. No trial has tested this green specifically for constipation. If you have not passed stool for several days or have pain with it, see a doctor rather than adding greens.
• Feeling bloated or overfull after eating: Korean home tradition adds aromatic ssukgat to rich, oily stews to settle a heavy stomach. This is a long-standing use, not a tested one. There is no human trial showing it reduces bloating.
• Winter coughs and chest tightness (traditional use only): The leaf was traditionally eaten in soup for a rattly cough and a tight chest. The evidence here is entirely traditional. Do not use it in place of treatment if you have asthma, a chest infection, or a cough lasting more than three weeks.
• Supporting a heart-healthy eating pattern: Diets high in leafy greens and potassium are linked in large population studies to better blood pressure and heart health. Ssukgat fits that pattern. No study has tested crown daisy on its own for blood pressure or heart disease, and it does not replace medication.

Which foods are rich in Ssukgat?

1. Korean hot pots and fish or beef stews: the leaf is dropped in at the end for aroma
2. Ssukgat namul: leaves blanched briefly, squeezed, then dressed with sesame oil, garlic and salt
3. Jjigae and clear soups such as maeuntang (spicy fish stew)
4. Japanese sukiyaki and nabe dishes, where the same plant is called shungiku
5. Fresh salads and ssam (leaf wraps), using the young tender leaves raw

Practical Tips:

Ssukgat is itself a food, so the simplest way to use it is on your plate rather than in a supplement.

What are the side effects of Ssukgat?

• Allergic reaction in people sensitive to daisy-family plants, from itchy mouth to rash to, rarely, swelling of the lips and throat
• Skin rash or itching on the hands after handling large amounts of the fresh plant
• Gas or loose stools if you eat a large amount at once
• A strong, bitter taste some people dislike or find causes mild nausea
• A shift in how stable your INR is (a blood test for people taking warfarin) if your intake of the leaf swings up and down

Good to know:

For most people ssukgat is a safe everyday vegetable with no side effects at all. The real risks sit with two groups: people allergic to the daisy family, and people on warfarin whose vitamin K intake needs to stay steady.

Problems from eating normal food amounts are uncommon and mild. There are no reports of organ damage from eating crown daisy as a vegetable.

How much Ssukgat should you take?

• Recommended daily: There is no established medicinal dose, because it has never been tested as a medicine in people. As a food, a normal serving is about 50 g to 100 g of fresh leaf (roughly one to two large handfuls), which shrinks to a few spoonfuls once cooked. Eating it several times a week is ordinary and unremarkable. Dried leaf teas and leaf powders have no tested dose. If you use one, follow the label and treat it as a food-strength product, not a drug.
• Best time of day: Any time. It is usually eaten with lunch or dinner as part of a cooked dish.
• With or without food: With food — it is a food. Add the leaves in the last 30 to 60 seconds of cooking so they wilt but keep their scent.
• Time to effect: Any digestive comfort people notice is usually the same day, during or after the meal. Nutritional benefits build slowly over weeks and months of regular eating.
• How long to take it: As a vegetable, you can eat it as long as you like, the same as spinach or lettuce. If you are eating it for a specific problem such as a cough or bloating, give it about two weeks. If nothing has changed, stop treating it as a remedy and get the symptom checked.