Mo Shi Zi (Quercus infectoria Oak Gall) — Dried TCM Astringent Herb, 500g

Mo Shi Zi (Quercus infectoria), also known as Mo Shi Zi, Mo Shi Zi Seed, or Oak Gall, is the dried gall formed on oak trees and revered in Traditional Chinese Medicine (TCM) as Mò Shí Zǐ (没食子). For centuries it has been prized as a powerful astringent herb, traditionally used to bind and consolidate, restrain leakage, and support the lungs, intestines, and kidneys. Its nature is bitter, astringent, and neutral, making it a focused yet stabilizing herb in classical formulas.

Key Selling Points

• Traditional astringent herb of TCM
• Dried oak gall (Quercus infectoria)
• Known as Mo Shi Zi in Chinese medicine
• 500g bulk food-herb grade
• Sourced from broad production regions

Quality & Sensory

Each batch consists of small, rounded, hard galls with a dark brown to greyish-brown exterior and a dense, woody texture. They carry a faint, dry, earthy aroma with a subtle tannic note. When decocted, they yield a deep amber-brown infusion with a distinctly astringent, slightly bitter taste that coats the mouth, characteristic of high-tannin herbs.

Technical Specifications

Usage Scenarios

• Traditional herbal decoctions
• Astringent herbal formulas
• External wash preparations
• Bulk herbal dispensing
• Classical TCM formula ingredient

Traditional Uses

In folk herbal practice, Mo Shi Zi is decocted into astringent formulas and sometimes applied externally as a wash. It is traditionally combined with herbs like Wu Mei, He Zi, and Wu Wei Zi in formulas intended to consolidate and restrain. As a daily practice, it appears in classical decoctions rather than everyday teas due to its strong astringent character.

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