## Common ground
All options are fish kettles—containers used for cooking fish, typically with a lid and heat source.
## Options at a glance
**7013.4X – made of glass**
- **Defining trait:** Transparent material allows visual monitoring of cooking process.
- **Typical examples:** Glass steamer pots, clear fish cookers for home use.
- **Best fit when:** User wants to see fish while cooking, prefers non-reactive material, or values aesthetic appeal.
**7323.9X – made of iron or steel**
- **Defining trait:** Durable, heat-retaining metal construction; often used for industrial or heavy-duty cooking.
- **Typical examples:** Cast iron fish pots, stainless steel steamers in commercial kitchens.
- **Best fit when:** High heat, long cooking times, or rugged use are needed (e.g., restaurants, outdoor cooking).
## Key differences
| Feature | 7013.4X (glass) | 7323.9X (iron/steel) |
|------------------|------------------------|----------------------------|
| Material | Glass | Iron or steel |
| Heat retention | Low | High |
| Durability | Fragile | Robust |
| Visibility | Transparent | Opaque |
## How to choose
- Is the kettle made of glass? → 7013.4X
- Is it made of iron or steel? → 7323.9X
## Overlaps & pitfalls
A fish kettle could theoretically be made of metal with a glass lid, but the primary material determines classification. If unsure, prioritize the main body material. The term “fish kettle” doesn’t imply material—so use physical composition to decide