Anyone who has ever been to the Northwestern mountains, can sleep on stilts, participate in fair markets and enjoy the specialties of mountains and forests must have an unforgettable meal of Cao Bang greens. A dish if you enjoy it for the first time, you may not like it right away, but you will definitely remember it forever.
Specialties Cao Bang Da Hien vegetables
The name of the “Da Hien vegetables”
Da Don (also known as Bo Khai), Tay – Nung called Phjắc diên, often grows wild in Cao Bang rocky mountains. This is a plant with a very brittle stem and can be easily broken.
Dehydrated vegetables are found in most of the Northwest mountainous provinces, but most are Bac Can, Cao Bang, Lang Son. Called beef declaration because vegetables smell like beer, but perhaps in the time when there was no beer foam like now, many people felt the smell of vegetables … cow’s urine, so it was named beef. 
Dare to donate (also known as lettuce)
With many different names such as beef khai, khau incense or donut, this vegetable is green, luscious, eye-catching without care. They do not live in fertile lands but grow on rocky mountains, divided into branches, crawling, following wooden trunks up to sunlight.
Around the spring, Cao Bang greens will begin to bloom and lush green tops and those who are lucky enough to meet the linden tree will never miss this opportunity. During the period from February to July of lunar calendar, anyone who goes to the forest to pick one or two handfuls of Da Don vegetables feels very precious.
Processing greens Da Hien
The Da Hien vegetables just need to be washed, cut like spinach and then fried. The way of stir-frying is almost like stir-frying water spinach, meaning that the older the fat the better, and just turn it over a few times for the vegetables to just be cooked (under-frying is the best). Just chewing a few pieces, we can see the attractive taste of this vegetable, because it has both greasy taste and aroma. 
The Da Hien vegetables just need to be washed, cut like spinach and then fried
If anyone has eaten, been away from the countryside for a long time, then suddenly come back and eat Cao Bang greens , it will feel like I have just enjoyed a certain “flavored paint” that I used to know. Many traditional healers said that the donation is not just a wild vegetable with a strange and delicious taste, but also a tonic for kidneys, strong tendons.
Da Hien vegetables are used to treat nephritis, hepatitis, inflammation of the secretory, urinary incontinence. When people go away tired, their urine is cloudy, they just need to eat this vegetable 1-2 times to return the urine to normal. In particular, the vegetables of Bo khai are taken with good results for drinking water to treat viral hepatitis and the root of red ginseng is also one of many herbs for infertility. 
Sauteed Da Hien vegetables
Due to its deliciousness and many uses, for many years, Cao Bang greens have become a specialty vegetable in Cao Bang. On the occasion of spring and summer, in the town as well as in towns and towns, there is almost no party, no feast is no plate of fried vegetables and fresh beef or pork, chicken heart … In the past few years, many patrons from the lowlands to Cao Bang on the occasion of February to June, the seventh month of the lunar calendar have not forgotten to find stir-fried Pho with Da don vegetables. Indeed this is a strange and delicious dish, it seems only in Cao Bang. Many people believe that if there is a dish of fried pho Da don, they do not need to add any other food to be full. 
Red gooseberry vegetables
Cao Bang Da Hien vegetables are both specialty vegetables and a particularly clean vegetable, so mothers and sisters from far away villages carry them to the market and town as much as possible. Due to such a large consumption demand, many families in remote villages know how to protect and preserve Da Hien trees. Some forest garden owners have begun to pay attention to research and trial planting to gradually bring Da don to their orchards. Currently, these vegetables are not only consumed in Cao Bang but many people already know how to preserve them to move down and down to make gifts for relatives. Donut has been present in restaurants in cities and is considered a specialty of mountains and forests.
Da Hien vegetables are also a cure
Enjoy once you will miss this dish because the taste of this forest vegetable dish is very strange, unlike any other specialty vegetables of Cao Bang. Said aroma is not really, but for many people, it is a particularly attractive flavor, it is located in the nostalgia of this country when going away and is in many memories of those who have been here.
Photo: Internet