What Makes Red Jade No. 18 Us Different?

Red Jade No. 18 Pyramid Tea Bags
Enjoy the bold taste of Red Jade No.18, now available in convenient pyramid tea bags. Known worldwide as Ruby 18, this Taiwanese black tea unfolds with vibrant layers of ripe fruit, citrus, and mint. Each nitrogen-filled, eco-friendly bag holds 3g of whole leaves. It ensures freshness, full expansion, and a smooth cup whether brewed hot or cold.
✅Fragrant notes of ripe fruit, citrus, and mint
✅Pyramid shape allows full leaf expansion
✅Ideal for hot or cold brew methods
✅Naturally high caffeine (~30mg/g) for steady focus
✅Grown near Sun Moon Lake, Taiwan
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What’s Inside
- 12 pyramid bags, each with 3g of whole-leaf Red Jade No.18
- Distinct aroma: ripe fruit, citrus, and mint layers
- Cultivar: Taiwan Tea No.18 (Ruby 18), officially registered in 1999
- Designed for full leaf expansion and consistent brewing
- Perfect for both hot and cold brew methods
Eco-Friendly by Nature
- Pyramid tea bags crafted from corn-based PLA, 100% biodegradable
- Nitrogen-filled packaging locks in delicate aromas until steeped
- Minimal packaging, recyclable and designed for easy storage
- Supports responsible Taiwanese farming near Sun Moon Lake
Shipping & Subscriptions
- Ships fresh from Wilmington, DE
- Free shipping available on qualifying U.S. orders
- Subscribe and save with convenient tea deliveries
- Hassle-free packaging built for safe transit
Why Dong Po Tea?

A Cultivar Like No Other
Red Jade No.18, officially registered in 1999, represents one of Taiwan’s proudest tea innovations. Created from Burmese Assam and native wild tea, it delivers boldness with elegance. Its unique genetics make it unlike any other black tea in the world.

Pyramid Bags for Full Flavor
Each corn-based PLA pyramid bag holds 3g of whole leaves for proper infusion. The design gives leaves space to expand, unlocking layers of fruit, citrus, and mint. With every steep, you enjoy flavor as rich as traditional loose brewing.

Freshness Protected
Every tea bag is nitrogen-filled, locking in delicate aromas until you brew. This process preserves the leaves for months without losing their fragrance. It ensures your first sip tastes as fresh as the day of packing.

Balanced Boldness
Ruby 18 combines strength with clarity instead of heaviness. You’ll taste ripe fruit sweetness balanced by citrus zest and a cooling mint finish. This makes it bold enough to energize yet smooth enough for daily enjoyment.
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Red Jade No.18, known globally as Ruby 18, now comes in convenient pyramid tea bags that preserve all the richness of Taiwan’s most famous black tea. Registered in 1999 as Taiwan Tea Species No.18, this cultivar quickly earned recognition for its distinctive aroma of ripe fruit, citrus, and mint. By blending tradition with modern innovation, these tea bags offer the full Ruby 18 experience with ease.
A Distinctive Flavor Profile
Each pyramid bag contains 3g of whole leaves, allowing the tea to unfurl and release its bold character. You’ll taste natural fruit sweetness balanced by citrus zest and a refreshing minty finish. Unlike heavy black teas, Ruby 18 offers strength without harshness, creating a lively, smooth cup that feels satisfying yet refreshing.
Energy That Lasts
With about 30mg of caffeine per gram, Red Jade tea bags provide a steady lift stronger than oolong but gentler than coffee. The energy is focused and smooth, making it a great choice for mornings or midday clarity. Whether you need focus at work or balance in the afternoon, it delivers both without a crash.
Convenience Meets Craft
Pyramid tea bags are designed for full leaf expansion, unlocking the same depth you’d expect from loose leaf. Made from biodegradable corn-based PLA, they’re eco-friendly and safe for the planet. Each bag is nitrogen-sealed, protecting the delicate aroma until the moment you brew.
Perfect for Hot or Cold Brewing
Ruby 18 adapts beautifully to your routine. Steep a bag in hot water for three minutes and enjoy its bold layers. Or try cold brewing overnight - the result is a sweet, refreshing infusion with gentle citrus and orange blossom notes that shine on warm days.
Taiwan’s Proud Heritage in Every Cup
Grown near Sun Moon Lake, this cultivar reflects Taiwan’s commitment to crafting teas that balance tradition with innovation. Farmers continue to handpick leaves with care, carrying forward generations of expertise. Each tea bag is more than convenience; it is a connection to Taiwan’s proud tea culture, delivered to you with ease.
How to Brew Red Jade No.18 Tea Bags
Brewing Ruby 18 is simple with our pyramid tea bags. Each bag is carefully filled with 3g of whole leaves, which give you consistent flavor whether enjoyed hot or cold.
- Place 1 pyramid tea bag in 350ml of cold water and refrigerate at 4°C (40°F).
- Let it steep for about 18 hours to allow the leaves to slowly release their natural sweetness.
- The result is a smooth, refreshing brew with fruity, citrus, and minty notes that shine when served chilled.
Frequently Asked Questions
Curious about how to get the best from Ruby 18? We’ve gathered answers to the most common questions about its flavor, brewing, freshness, and heritage. These insights help you enjoy every pyramid tea bag to the fullest.
How many times can I steep one pyramid tea bag?
How many times can I steep one pyramid tea bag?
You can steep a pyramid tea bag twice, enjoying a strong first infusion and a lighter second. The first cup highlights fruit and citrus brightness with a mint finish. The second steep reveals softer sweetness and a more delicate herbal character.
What makes Ruby 18 different from other black teas?
What makes Ruby 18 different from other black teas?
Ruby 18 blends boldness with clarity, offering a flavor that’s both powerful and refreshing. Instead of heavy malt, you’ll taste ripe fruit, citrus zest, and cooling mint. Its origin near Sun Moon Lake and unique cultivar give it a distinct Taiwanese identity.
Does Red Jade No. 18 have a lot of caffeine?
Does Red Jade No. 18 have a lot of caffeine?
Yes, it contains about 30mg of caffeine per gram, giving more energy than oolong but less than coffee. The effect is uplifting yet smooth, perfect for mornings or midday focus. Unlike coffee, it provides steady energy without harsh crashes.
Are the tea bags eco-friendly?
Are the tea bags eco-friendly?
Yes, each pyramid tea bag is made from corn-based PLA, which is fully biodegradable. They are nitrogen-filled to protect the leaves, keeping flavor intact until brewed. This makes them safe for you and friendlier to the planet.
Why is Red Jade No. 18 called the “Taiwanese Scent”?
Why is Red Jade No. 18 called the “Taiwanese Scent”?
In 1999, Taiwan registered this cultivar as Tea Species No. 18, soon nicknamed Ruby 18. Its bold aroma of fruit, citrus, and mint became a symbol of modern Taiwanese black tea. Locals and tea lovers alike proudly call it the “Taiwanese Scent” to honor its heritage.