Er Cha (Acacia catechu) — Dried Catechu Heartwood Herb for Traditional Use

Er Cha (Acacia catechu), also known as Catechu or Black Catechu, is the dried concentrated extract prepared from the heartwood of a revered traditional herb known in Traditional Chinese Medicine (TCM) as Ér Chá (儿茶), with folk names including Hái Ér Chá (孩儿茶), Hēi Ér Chá (黑儿茶), and Wū Diē Ní (乌爹泥). For centuries, Er Cha has been prized as an astringent, sore-clearing, and tissue-supporting herb, traditionally used to restrain leakage, clear heat, and support the body's natural healing processes. Its nature is bitter, astringent, and slightly cold, making it a focused yet gentle herb for astringing and clearing.

Key Selling Points

• Traditional astringent and heat-clearing herb
• Dried catechu extract from Acacia catechu heartwood
• Known in TCM as Er Cha, Hai Er Cha, and Wu Die Ni
• 500g bulk pack for long-term traditional use
• Also available as custom-milled powder on request

Quality & Sensory

Each batch is carefully prepared and dried to preserve its dark brown to blackish color, dense texture, and faint smoky-resinous aroma. When decocted or steeped, it yields a deep amber-brown infusion with a strongly astringent, slightly bitter taste and a dry, puckering mouthfeel that lingers briefly before fading.

Technical Specifications

Usage Scenarios

• Traditional herbal decoctions and formulas
• External wash and compress preparations
• Herbal powder blends for traditional use
• Mouth rinse and gargle preparations in folk practice
• Custom-milled powder for compounding

Traditional Uses

In folk herbal practice, Er Cha is decocted alone or combined with other herbs to support astringing and clearing. It is traditionally included in formulas for oral and throat rinses, in washes for the skin, and in external pastes and powders. It also appears in classical preparations alongside herbs such as Huang Bai and Qing Dai, and is sometimes applied as a fine powder in traditional topical practice. As a daily preparation, it is brewed as a strong, astringent tea or added to herbal blends for its drying, restraining qualities.

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