| Property | Specification |
| Size | 5 - 10 cm in length |
| Shape | Irregular, knobby, with branching rhizomes |
| Color | Light brown to yellowish-brown (outer skin); pale yellow to light tan (inner flesh) |
| Odor | Strong, aromatic, warm, and slightly spicy |
| Flavor | Pungent, spicy, with a slight sweet and earthy taste |
| Moisture Content | 8 - 12% |
| Density | 0.7 - 1.0 g/cm³ |
| Purity | Free from foreign materials like stones, dirt, or dust |
| Volatile Oil Content | 1 - 3% (primarily gingerol and other compounds) |