Business Field

Tea Business

The consumption of tea for an extended period provides
both physical energy and psychological stability.
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The Tea business division of Dongsuh leads efforts to induce more people to enjoy tea while promoting a positive tea culture by providing a wide variety of tea products in line with the social consumption trends of prioritizing physical and mental well-being. The division introduced topnotch tea bag packaging facilities in 2004 to supply diverse tea products such as green tea with brown rice, Solomon's seal tea, and other teas based on the various crops familiar to the public, including facilities for the triangle tea bag as the new type of tea bag for prime products like black tea while expanding the company’s product base in 2016. We also come up with ingredients based on black tea and green tea for processed foods to be supplied both locally and internationally.

Production process and hygiene control

We are implementing strict hygiene and quality control for all products. We ship safe products only through multi-step quality assurance for ingredients going through complete history tracking including the origin of materials and safety inspection.

  • Origin control

  • Processing ingredients

  • Pre-packaging safety inspection

  • Packaging intermediate inspection

  • Pre-shipment safety inspection

The stability and reliability of our hygiene control for all production processes have been proven by the Food Safety Control Certificate awarded to us in 2015, and we still continue to upgrade our safety control system. Dongsuh has acquired a Halal Certificate for powdered green tea to produce goods suitable for the Sharia in 2017, which will be an opportunity for us to come up with diverse products for Islamic consumers.


Preventive food safety control

Dongsuh is applying preemptive controls to block harmful chemicals and germs from all ingredients and products in order to ensure the well-being of consumers. Specifically, we are equipped with the top facilities and analysis capabilities in Korea regarding pesticide residue, Mycotoxin, and microorganisms. We endeavor to enhance efforts to collect information on harmful substances, and we have established a system for the immediate retrieval and inspection of products distributed in the market in case of an emergency.

Food and ingredient researches

Dongsuh is concentrating its efforts on developing and commercializing new products to fulfill the needs of consumers through constant R&D activities. We are offering market-leading products by taking the latest trends into account and conducting diverse researches to improve the quality and values of current representative products such as brown rice green tea, Solomon's seal tea, and buckwheat tea.

  • Determination of product concept

    Determination of product concept

  • Ingredient research and exploration

    Ingredient research and exploration

  • Processing test

    Processing test

  • Product review (mix proportion, sensory test, etc.)

    Product review
    (mix proportion, sensory test, etc.)

  • Application of packaging

    Application of packaging

  • Final setup of production processes

    Final setup of production processes

Dongsuh is conducting fundamental research to supply products made of various materials and ingredients to local food companies. We are constantly endeavoring to identify the trends in state-of-the-art technologies and apply them to our own processes and expanding the customer base by developing powdered green tea products of different functionality. We will come up with new products of great values based on tea ingredients for health-oriented functions.

Product details

  • Dongsuh Brown Rice Green Tea

    Dongsuh Brown Rice Green TeaView Detail

    The inherent flavor of brown rice and taste of green tea are mixed in harmony to suit the preferences of global consumers; what’s more, the reasonable price tag caters to the needs of green tea lovers. Each tea bag can be conveniently thrown away after consumption.
  • Dongsuh Solomon's Seal Tea

    Dongsuh Solomon's Seal TeaView Detail

    The unique flavor of Solomon's seal can be enjoyed instantly thanks to the convenient tea bag packaging.
  • Dongsuh Buckwheat Tea

    Dongsuh Buckwheat TeaView Detail

    Dongsuh Buckwheat Tea is made with 100% tartary buckwheat containing far more rutin than general buckwheat; it is produced with the FBR production process, our proprietary technology, to preserve the strong flavor and scent of buckwheat.
  • Dongsuh Purple Corn Tea

    Dongsuh Purple Corn TeaView Detail

    Dongsuh Purple Corn Tea is literally made of purple corn, the main ingredient of Chicha morada, one of the favorite beverages of the Peruvians as descendants of the Inca civilization. It also contains anthocyanin, which improves eye health.
  • Dongsuh Rooibos Barley Tea

    Dongsuh Rooibos Barley TeaView Detail

    Dongsuh Rooibos Barley Tea is based on 100% Korean barley containing rooibos that provides flavonoid, one of the most powerful anti-oxidant components, to ensure the best physical well-being of consumers. Children or expectant mothers can enjoy Dongsuh Rooibos Barley Tea since it contains no caffeine.
  • Dongsuh Cassia Seed Tea

    Dongsuh Cassia Seed TeaView Detail

    Dongsuh Cassia Seed Tea is made of 100% cassia seeds for the ultimate tea experience.
  • Dongsuh Jirisan Green Tea Powder with Brown Rice

    Dongsuh Jirisan Green Tea Powder with Brown RiceView Detail

    Dongsuh Jirisan Green Tea Powder with Brown Rice has replaced the typical unpleasantness and bitterness of general powdered green tea taste with the flavorful and soft taste of the traditional Deukeumcha tea from Jirisan Mountain so that anyone can enjoy it instantly by simply pouring the powder into the water.
  • Tarra First Date

    Tarra First DateView Detail

    Representing the beauty of first love, Tarra offers its symbolic black tea, Tarra First Date, directly from Korean tea farms. It provides the ultimate blend of depth and dignity of Assam black tea from India and softness and sweetness of kandy black tea.
  • Tarra Fresh Delight

    Tarra Fresh DelightView Detail

    Tarra Fresh Delight provides a great mixture of sweetness and sourness of citrus, which is also known as “a piece of magic,” and the flavor of Uva black tea, one of the three most popular black teas in the world, to offer freshness in the midst of softness of black tea.
  • Tarra Classic English Breakfast

    Tarra Classic English BreakfastView Detail

    Tarra Classic English Breakfast boasts of minimal bitterness thanks to black tea leaves harvested from the vintage single tea farms located in Assam, India and Ruhuna, Sri Lanka; you can also enjoy its strong malt and flavor.
  • Tarra Classic Earl Grey

    Tarra Classic Earl GreyView Detail

    For Earl Grey, the aromatic black tea loved worldwide, Tarra has added even more flavor and scent through the bergamot scent and black tea leaves harvested from a vintage single tea plantation.

Lab equipment details

Equipment name Purpose
GC / MS / MS Analysis of pesticide residue in samples
LC / MS / MS Analysis of harmful substances such as pesticide residue and mycotoxin in samples
GC / MS-DHS-TDU Analysis of off-flavor, off-smell, and scent in samples
GC / PFPD, ECD, NPD Analysis of other harmful substances such as pesticide residue in samples
HPLC / FLD, DAD Analysis of functional ingredients and other harmful substances in samples
NIR Analysis of functional ingredients such as amino acid in samples
ICP-OES Analysis of heavy metal in samples
UV-Vis spectrometer Analysis of functional ingredients of tea
VIDAS Rapid analysis of pathogenic microorganism

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