Sun Moon Lake Black Tea: Taiwan’s Crimson Jewel

Sun Moon Lake Black Tea (Riyue Tan Hongcha) is a world-class tea produced in the misty, high-altitude terrain surrounding Taiwan’s most famous lake. Nestled in Nantou County, this premium variety is a testament to the island’s innovative agricultural spirit. While Taiwan is often associated with high-mountain oolongs, its black tea production—specifically from this region—has gained international acclaim for its extraordinary aromatic profile. As a hallmark of our Specialty Island Tea Series, Sun Moon Lake Black Tea offers a drinking experience that is simultaneously bold, cooling, and sweet.

The Terroir of Nantou

Located at an average elevation of 600 to 800 meters, the area around Sun Moon Lake provides a unique microclimate. The frequent mountain mists, consistent humidity, and rich, well-drained soil create an environment where tea bushes thrive. This terroir is essential for this specific black tea, as it allows the leaves to retain high levels of essential oils, which translate into the tea’s signature “cool” finish. The balance of warm days and cool nights concentrates the natural sugars within the leaves, resulting in a brew that is naturally sweet without any additives.

What is Ruby No. 18?

The most famous cultivar in the region is TRES No. 18, commonly known as “Ruby” (Hong Yu). Developed by the Taiwan Tea Research and Extension Station, it is a cross between the Burmese Large-Leaf variety and the wild Formosan mountain tea. This hybrid vigor is what gives Sun Moon Lake Black Tea its distinctive personality—it possesses the strength of a traditional black tea combined with the complex, floral elegance of Taiwan’s native flora.

The Signature Profile: Mint and Cinnamon

When you sip Sun Moon Lake Black Tea, the first thing you notice is the “Ruby Aroma.” It is a rare combination of natural mint and spicy cinnamon. This is not a flavored tea; these notes are inherent to the leaf itself. The liquor is a bright, clear red, resembling a liquid gemstone. On the palate, this aromatic tea is incredibly smooth with a medium body, offering a lingering sweetness that feels refreshing and clean. It is often described as “cool” because of the menthol-like sensation that graces the throat after each sip.

• Menthol Notes: A natural, cooling sensation unique to the Ruby cultivar.
• Cinnamon Spice: Warm, woody undertones that balance the floral brightness.
• Bright Red Liquor: A stunning visual presentation that matches the “Ruby” name.
• No Astringency: Exceptionally smooth, even when brewed with boiling water.

A Japanese Colonial Legacy

The history of Sun Moon Lake Black Tea dates back to the Japanese colonial period in the early 20th century. Japanese experts brought Assam tea seeds to Taiwan and discovered that the climate of Nantou was nearly identical to the tea-growing regions of India. For decades, this Taiwanese variety was a closely guarded luxury, exported to Japan and Europe as a high-end specialty. Today, it has evolved from an imitation of Indian styles into a unique Taiwanese icon that rivals the best Darjeelings and Assams in the world.

The Craft of the Crimson Brew

The processing of this handcrafted tea is an art of patience. After the leaves are plucked, they undergo a long withering process to reduce moisture and concentrate flavor. They are then gently rolled to break the cells and initiate oxidation. Because Sun Moon Lake Black Tea uses high-quality whole leaves, the oxidation must be perfectly timed to ensure that the tea develops its ruby color without losing its characteristic “wild” aroma. Finally, a light roasting stabilizes the tea and adds a touch of honeyed sweetness.

Mastering the Sun Moon Lake Infusion

To fully experience the aromatic layers of Sun Moon Lake Black Tea, we recommend using a Clear Glass Teapot to enjoy the brilliant ruby color of the liquor.

🔍 Sun Moon Lake Black Tea FAQ