User Manual for Zwilling Thermo Food Jar
Get the most out of your Zwilling Thermo Food Jar with this user guide. Learn how to clean, fill, and safely use your insulated container to keep food at the right temperature.
Table of contents
Quick Guide
The Zwilling Thermo Food Jar is designed to keep food at the desired temperature. Before using, ensure you rinse the container with hot water for hot food or cold water for cold food to maximize insulation performance. Always fill the container only up to the bottom of the thread to prevent leaks and ensure the lid closes properly.
Cleaning and Care
Before the first use, rinse the product with warm water and a little detergent, then allow it to dry in a well-ventilated area.
- All parts are dishwasher-safe, but hand washing is recommended to preserve the product.
- Use a soft cloth and standard dish soap. Do not use abrasive cleaners, scouring powder, or steel wool.
- For stubborn stains, clean with hot water and baking powder, then rinse thoroughly.
- Clean the container thoroughly after every use.
Usage Instructions
To achieve optimal insulation:
- Rinse with cold water before adding cold drinks or food.
- Rinse with hot water before adding hot drinks or food.
- Fill liquids only up to the bottom of the thread.
- Ensure the lid is closed correctly and fully.
Safety Warnings
Failure to follow these warnings may result in injury or scalding:
- Do not use for carbonated drinks, dry ice, dairy products, or baby food (risk of bacterial growth).
- Do not store fermenting foods (e.g., peas, beans, cabbage) as they can build up pressure.
- Do not keep warm food in the container for longer than 10 hours.
- Do not heat in a microwave, oven, or on a grill/hot plate.
- Keep away from heat sources.
- Keep out of reach of children when filled with hot liquids.
Pressure Relief Valve
If pressure has built up inside the container, making it difficult to open, you can safely release it by pressing the pressure relief valve located on the lid.

Manufacturer information
Zwilling J.A. Henckels
Practical help
Common problems
Press the pressure relief valve on the lid to safely release built-up pressure.
Ensure the jar is not overfilled (fill only to below the thread) and the lid is closed correctly.
Before use
- Rinse the product with warm water and detergent before first use.
- Allow the product to dry thoroughly.
- Pre-rinse with hot water for hot food or cold water for cold food to optimize insulation.
Specs in practice
- Pressure relief valve
- A button on the lid used to safely release internal pressure if the lid is stuck.
Images and diagrams
- The diagram illustrates how to press the center of the lid to activate the pressure relief valve.
Model compatibility
- Not suitable for carbonated drinks, dry ice, dairy products, baby food, or fermenting foods.
- Not suitable for microwave, oven, grill, or hot plates.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.