Back to top

Fernbrake or Bracken, Gosari 고사리

39 kcal (100g)
Key Nutrients: 
dietary fiber, protein
Read full nutrition facts »

Young stems of Fernbrake or Bracken ("gosari") are commonly used as the main wild edible greens in Korea. Fernbrake is used to make Namul, korean vegetable side dishes or used in soup or stews. It is also one of the main ingredients for the most popular Korean dish, bibimbap. Fernbrake is called "the beef of the mountains" due to the high protein content. It is also good for diet and constipation relief because it's high in dietary fiber. However, it is better to eat bracken cooked since the raw ones contain thiaminase, which decomposes vitamin B1. It is usually sold dried so you should soak it in water and blanch it before cooking.

You can buy Gosari online here.

Sourcing & Selecting

Local Korean grocery market

You can buy Gosari online here.

Flowering fern ("gobi-namul") can be used to replace bracken. However, it would be much easier to find bracken!!
How to Measure: 
50 g of dried gosari yields a handful of blanched gosari (after blanching and squeezing out water).
Seal dried bracken tightly and keep it in the refrigerator (1ºC ~5ºC) . You may also freeze it after blanching in boiling water with some salt.

Soak dried bracken in cold water for at least 3 hours. (Overnight is ideal.)

image: bracken01.JPG

Wash thoroughly twice. Cut in half.

image: bracken02.JPG

Blanch in boiling water until soft (if soaked over night, blanch for 3-5 min, if soaked for 3 hours, blanch for 15 min). If you don’t have time to soak it, you can get away with blanching it for a longer time until soft.

image: bracken03.JPG

Rinse in cold water twice. Squeeze out water. (Don’t squeeze too hard. It may get too mushy.)

image: bracken04.JPG

It’s now ready to be used in cooking.


Some people reverse the process (i.e., Blanch first and soak overnight. Then wash.)

Depending on how dry the gosari is and how long you soak, the blanching time may vary.

It also depends on your preference on the texture.

If you don’t soak or blanch enough, it will be tough. If you overdo it, it will be mushy.

image: bracken05.JPG

Nutrition and Health Facts: 

Niacin 0.20mg
Sodium 1.00mg
Protein 3.90g
Glucide 5.10g
Retinol 0.00μg
β O Carotene 0.00μg
Vitamin A 34.00μgRE
Vitamin B1 0.07mg
Vitamin B2 0.10mg
Vitamin B6 0.21mg
Vitamin C 26.00mg
Vitamin E 4.00mg
Dietary Fiber 3.71g
Zinc 0.44mg
Folic Acid 34.30μg
Phosphorus 84.00mg
Lipid 0.30g
Iron 1.50mg
Potassium 415.00mg
Calcium 14.00mg
Cholesterol 0.00mg
Ash 1.20g
(of 100 grams of bracken)


All information within this website is provided for general educational and informational purposes only. This information is not intended nor in any way implied to be medical advice. You should always consult professional health care providers regarding the personal application of any opinions or recommendations related to health symptoms or medical conditions mentioned.