Oyster Shell Powder (Ostrea gigas) — Food-Grade Fine Powder, Food-Herb Mineral Ingredient

Oyster Shell Powder (Ostrea gigas / Ostrea spp.) is the finely milled shell of the oyster, a traditional food-herb (药食同源) ingredient known in Traditional Chinese Medicine (TCM) as Mǔ Lì (牡蛎). Long prized as a mineral-rich, settling, and yang-anchoring substance, oyster shell has been used for centuries in decoctions and medicinal food preparations. Its nature is slightly cold and its flavor is salty, making it a gentle yet grounding ingredient traditionally associated with calming the spirit and settling restlessness.

Key Selling Points

• Food-grade fine oyster shell powder
• Traditional food-herb (药食同源) ingredient
• Sourced from Bozhou, Anhui — China's herbal heartland
• Sun-dried and finely milled for smooth texture
• 500g bulk pack for daily food and tea use

Quality & Sensory

Each batch is sun-dried and finely milled to a soft, uniform powder with a pale grey-white to ivory tone. The texture is smooth and free-flowing, with a faint, clean mineral aroma reminiscent of the sea. When simmered in decoctions or added to soups, it settles quietly at the bottom and imparts a subtle salty-mineral note without overpowering the broth.

Technical Specifications

Usage Scenarios

• Simmered in traditional herbal decoctions
• Added to medicinal food soups and congee
• Blended into daily grain or porridge mixes
• Used as a mineral-rich food ingredient in small amounts
• Included in seasonal nourishment preparations

Traditional Uses

In folk herbal practice, oyster shell powder is decocted into soups and medicinal congee, often paired with ingredients like dragon bone (龙骨), white peony root, and licorice root to support a calm, grounded constitution. It is a classic component of traditional spirit-settling formulas and is also simmered into seasonal broths for its mineral depth. In daily food use, small amounts are stirred into congee or grain porridges as a traditional mineral supplement.

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