Zao Xin Tu (Furnace Soil / Fu Long Gan) — Traditional Chinese Medicinal Clay, 500g

Zao Xin Tu (灶心土), also known as Fu Long Gan (伏龙肝), is a traditional Chinese medicinal clay taken from the earthen lining beneath old earthen stoves and hearths. In Traditional Chinese Medicine (TCM), it is classified as a mineral-based herb with a warm nature and a sweet, pungent flavor, entering the Spleen and Stomach channels. For centuries it has been prized as a warming, earth-toned herb used to settle the middle burner, harmonize the digestive system, and anchor restless qi and blood. This listing offers 500g of raw Zao Xin Tu, available with optional grinding service upon request.

Key Selling Points

• Traditional TCM mineral herb Zao Xin Tu (Fu Long Gan)
• Sourced from earthen stove and hearth lining
• Warm nature, sweet and pungent flavor
• Enters the Spleen and Stomach channels
• 500g raw form with optional grinding service

Quality & Sensory

Each batch of Zao Xin Tu presents as a reddish-brown to yellowish-brown earthy clay with a loose, crumbly texture and a faint, dry, mineral aroma reminiscent of baked earth. When decocted, it releases a subtle, warm, earthy taste with a slightly sweet and chalky mouthfeel. The material is carefully collected and sun-dried to preserve its natural color and mineral character, and it can be ground into a fine powder upon request for easier incorporation into decoctions or wraps.

Technical Specifications

Usage Scenarios

• Traditional decoction with other herbs
• Herbal soup and congee preparation
• Powdered form for custom herbal blends
• External compress in folk practice
• Seasonal digestive wellness routines

Traditional Uses

In folk herbal practice, Zao Xin Tu is decocted into warming soups and congee, often paired with ginger, jujube, and other Spleen-warming herbs to support digestive comfort during cold seasons. It is also traditionally used in herbal formulas for its earth-anchoring properties, and in some folk traditions it is wrapped in cloth and applied externally as a warm compress. As a daily practice, it may be simmered alone or with other herbs to create a gentle, earthy infusion.

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