Deep Fired Dong Ding Oolong / 凍頂烏龍炭焙
Deep Fired Dong Ding Oolong / 凍頂烏龍炭焙
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Deep Fired Dong Ding Oolong / 凍頂烏龍炭焙

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Dong Ding Oolong is named after the mountain where the tea garden is located. It's a famous Taiwanese tea.

Although the name of tea is Deep Fired, this tea is lightly baked and it retained a soft floral undertone. The tea liquor is yellowish color. It has no bitterness or astringent at all. It gives comfortable sweet nutty note, with a hint of baked sweet potato flavor, and a smooth drinking sensation; a tea that can be served anytime in a day.

The altitude of Dong Ding Mountain is at around 800m at maximum, yet it is producing reputable quality all the while. The reason we think Dong Ding oolong is different from other mountain tea is that:


1. The age of tea trees planted at Dong Ding Mountain is relatively old. Tea trees were planted at Dong Ding Mountain in the beginning state when tea was brought from Fujian, China. The old tree has longer root that absorb more minerals which makes tea stronger in aftertaste.

2. The Dong Ding mountain has very windy and dry weather. Due to the harsh weather in the environment, tea tree grows slower and therefore organic and inorganic substance is accumulated.

3. Dong Ding mountain consist of very rocky soil. It is very poor in organic nutrition but rich in mineral. Tea tree grows slower, yet it absorb mineral very effectively.

Recently, the majority of Dong Ding oolong in Taiwan is not produced at Dong Ding Mountain. The number of tea garden at Dong Ding Mountain is very limited. Dong Ding mountain itself cannot support the increasing demand of Dong Ding oolong. In addition, there are many factors that differ the quality of Dong Ding oolong as follow:

1. Origin of tea

a: From Dong Ding mountain

b: From other mountain

2. Altitude

In general, the higher the altitude the tea is produced, the better the quality it becomes. However, a lot more volume of Dong Ding oolong is produced at lower altitude as the number of tea gardens located at lower elevation is more.

3. Season of plucking

Regardless of winter tea or spring tea, the best quality is made of the first-plucked leaf. The second-plucked leaf carries less mineral that gives weaker in aftertaste.

4. Cultivar

In general, there are two cultivars: Qing-Xin Oolong (青心烏龍種) and Jin-Xuan Oolong (金萱烏龍種). Qing-Xin Oolong is  the classic type that gives refreshing flowery flavor, while Jin-Xuan was developed recently by the tea research institute. It gives a hint of milky flavor.

5. Process

Dong Ding oolong is divided into two types according to the process. The Classic Dong Ding oolong was baked with fire in order to bring up nutty aroma. It is loved by elder people or gentlemen, while non-fired Dong Ding oolong gives flowery refreshing flavor that is generally loved by young people or ladies.

Our Deep Fired Dong Ding Oolong is made from Qing-Xin cultivar that is grown at Dong Ding mountain at 800m. It is plucked earliest in the season and baked with medium strength of fire.

History and Culture

Dong Ding is the name of the mountain which is located in the center of Taiwan called Nantou. The name of Dong Ding derived from a story: the path to the peak of this mountain used to be very slippery and climbers needed to conserve their strength on their toes to hike this mountain; in Chinese that is called "Dong Jiao Jian" (凍脚尖) and thus derives the origin of the name Dong Ding.

About 150 years ago, the oolong cultivar was brought to Dong Ding Mountain from Wuyi, Fujian Province of China. Initially, the name of Dong Ding Oolong was meant for the tea produced around Dong Ding Mountain. But when its fame and demand increased, oolong teas produced in other areas as well were also called Dong Ding Oolong as long as they followed the Dong Ding traditional manufacturing process. Nowadays, there are some tea cultivators who even roast low grade tea and export it as Dong Ding Oolong.

2. Production Area

HOJO's Dong Ding Oolong is produced exactly at the Dong Ding Mountain. Unfortunately, nowadays, this oolong tea, produced at Dong Ding Mountain is getting very rare on account to its increasing demand and reputation. Many tea cultivators try to produce it at a lower cost and in larger volume which is more than that produced at the tea garden at Dong Ding Mountain. It is rather difficult to find genuine Dong Ding Oolong that is from Dong Ding Mountain. In Taiwan, people also start recognizing that Dong Ding Oolong means a type of Tea.

Dong Ding Mountain
Dong Ding Mountain is not a very high mountain. But it is steep and always covered by fog.

Dong Ding Mountain is not a very high mountain. But it is steep and always covered by fog.

However, we only want to introduce the genuine Dong Ding Oolong. Dong Ding Mountain is not only famous for its name, but also its environment and weather is suitable for high grade tea. The altitude of this mountain is not that high, which is at around 1000m plus. The secret of Dong Ding Mountain is that it always produces identical quality due to its weather and soil condition. The tea garden gets very strong sunshine in the morning, but it is completely covered by fog in the afternoon. In addition, the environment is very windy, and the soil condition is less rich in nutrition. This severe environment causes the tea leaves to accumulate a lot of substances and leaving it no chance to consume these substances. That's the reason why tea produced at Dong Ding Mountain gives a very strong flavor and sweet aftertaste. You can easily recognize the difference once you've taste our tea.

The sweet flavor and mellow taste is the identical characteristics of Dong Ding Oolong produced at Dong Ding Mountain. In addition, our Dong Ding Oolong is grown at a non-pesticide tea garden

3. Cultivar and Plucking

Our Dong Ding Oolong is produced from Qing-Xin Oolong (青心烏龍種). This is the cultivars traditionally used for Dong Ding Oolong that gives a very refreshing drinking sensation.

Tea grown at organic garden appears to be less active and less productivity as tea gets less nutrition and pesticide as compared to the ordinary tea garden. As the identical characteristics, tea leaf turns into yellow color and its sweetness in flavor and taste is outstanding.

Tea plucking is carried out by hand. About 3 to 4 leaves, including a tea bud is carefully plucked by hand. Tea plucking is carried out in Spring, Summer, Autumn and Winter. The best quality is produced either from Spring or Winter.

Tea garden of Qing-xin Oolong 

4. Processing

Sunshine Withering

After plucking, tea leaves are spread over the ground under the natural sunshine. It is called Sunshine Withering. Usually, clouded weather is ideal to process this tea in order to avoid excess damage on tea leaves. If the sunny weather continues, a black cloth is used to cover the tea leaves to block out the harsh rays of sunshine. With sunshine withering, moisture inside the tea leaf is evaporated and fermentation is moderately triggered. The tea leaf will gradually start releasing a refreshing aroma.

Indoor Withering

The method of fermentation for oolong tea is completely different from that of black tea. After the sunshine withering is completed, tea leaves are conveyed into the factory and spread over a sheet. If tea leaves are rich in moisture, they are spread into a thin layer in order to increase the evaporation process. The tea leaves are then tossed onto a bamboo tray. This agitation and tossing, causes friction which in turn causes the tea leaves to start fermentation. The tray is then placed on a rack and these processes are repeated over and over again. This is what is called fermentation. Tea leaves gets oxidation mediated by the oxidation enzyme when the tea leaves get bruised.

Once entering the fermentation room, you might get surprised with its fragrance. You feel as if you are in a flower garden. Subsequently, tea leaves are rotated in a bamboo drum. The tea leaves are lifted and dropped several times. Gradually, the edge of tea leaves get damaged and further fermentation takes place. Tea leaves are again spread over the bamboo tray and the same process is repeated over and over again.

Once tea leaves get sufficient fermentation, it starts generating a flowery fragrance. Tea that is processed by a fine tea master is easily distinguishable. The original shape is maintained without any damage done to the tea leaves and only the edge of tea leaves are found to be red in color. This indicates that the tea leaves were successfully semi-fermented and the quality is far different from the tea leaves which have a reddish appearance at the center part of the leaf. Once the tea master finds that fermentation is sufficiently achieved, the tea is then sent for heat treatment in order to arrest further fermentation process. If this is not carried out swiftly, the tea leaves will keep on fermenting and it will finally turn into black tea.

The number of rotation and timing of fermentation is judged based on the moisture content, flavor and color. This decision requires top-notch experienced tea master which affects the quality of tea tremendously. All technicians follow the instruction of a tea master. In order to get good quality tea, we need to pick out an excellent tea master.


At this stage, tea is fermented and giving an identical characteristic of Dong Ding Oolong. However, tea leave has not been damaged or bruised except for its edge. Without physical damage on tea leaf, it is difficult to "brew". On the other hand, conducting the rolling process as black tea that tea leaf is twisted tautly under the strong pressure, tea leaf will be over damaged and get astringent and harsh in taste. In addition, excessive damage of leaf will expose tea constituent to oxygen and cause unwanted oxidation which will also affect the taste and flavor. Therefore, a very unique rolling process called "Bag rolling" is used for oolong tea. Literary, tea leaf is wrapped with a cloth and rolled. Therefore, tea leaves are twisted just right with the right amount of pressure applied.

While the tea leaves are still warm and soft, it is quickly wrapped with a cloth bag. About 10-20kg of tea leaf is wrapped and it is made into the size of about a basket ball. Then the end of cloth is mechanically twisted by a machine in order to squeeze it into a very solid ball. Finally, it becomes as solid as a stone ball, and as a result the tea leaves are compressed very tightly.

Then, the cloth ball is clamped between two disks at the top and bottom. The top disk does not move while the bottom disk rotate and tea gets further pressure through the motion. After the rolling process is conducted for a while, the bag is opened and the tea leaves are taken out and reheated again in a rotating drum. This is necessary as once the tea leaves cool down, it becomes crispy and easily crushed. This series of processes are repeated several times until tea leaves are well-rolled.

The tea leaves are gradually tighten and become round in shape. High grade tea is usually very solid and it appears to be dark and shiny as the tea juice is squeezed and hardens on the surface of the leaf.

The same sequence is repeated over and over again. The parameter is varied depending on the condition of leaf such as moisture content. It is important to feel the condition of tea leaf and apply the suitable method of process which is judged expertly by the tea master.

After this rolling process is completed, the tea leaves are dried and this will reduce the moisture content down to 5%.


This is the specific process for traditional type of Dong Ding Oolong. Once the process of oolong tea is completed, it's sent for baking process, which is carried out with either conventional heater or charcoal fire. Baking means it is heated with indirect heat. It is different from "roasting". Sometimes it is misunderstood as roasting process of Chinese green tea. As for lower grade oolong, the roasting is carried out instead.

Thanks to the baking process, tea has very thick and nutty aroma. Relatively, elder people and gentlemen prefer this aroma, while young customer prefer non-fired Dong Ding Oolong.

Due to the baking process, there is some losses in about 20%. This is the reason that Dong Ding Oolong traditional type is always more expensive than non-fired Dong Ding Oolong.