April 3

What is a Tetsubin Teapot ? 6 Japanese Cast Iron Teapots Under $100

What is a Tetsubin Teapot?

Tetsubin teapot also known as cast iron kettles are solidly bespoke and intricately decorated in works of art. Its heavy-duty cast iron material makes it a favorite among teapot collectors and also makes the perfect gift. With all the lovely styles available, most people decide to have several different styles.

A cast-iron kettle or tetsubin kettle can last for years and can be passed down through generations if used and cared for. Here’s how to use each one for the first time, how to properly brew tea or heat the water inside, and how to clean and care for them so they will last a lifetime.

How to use Tetsubin Teapot

First Time Use

Using cast iron kettles (with an enamel coating) for the first time requires mild seasoning. For a cast-iron kettle or tetsubin kettle (not kettle style), simply rinse the kettle inside with hot water to remove any factory residue and heat the metal. Then dry the kettle surfaces with a dry cloth or towel while it is still hot. Heating the metal with water will allow better evaporation from the surface so that it dries thoroughly. 

On the other hand, for a cast iron tea kettle or tetsubin-type kettle that can go on the stove, a different seasoning method is necessary. To season, rinse the kettle outside and then fill it with water as if preparing to make tea. Boil the water on the stove.

To complete the seasoning, simply pour the water out of the spout and allow the kettle to dry with the lid open. This will allow all the moisture to evaporate and rust will be prevented. Like an iron skillet, it must be dried thoroughly to avoid rust formation, so cast-iron kettle or tetsubin must be washed with hot water to evaporate any remaining water.

Ongoing use and care

A cast-iron kettle or tetsubin is for brewing tea. Hot water from another source should be added to the kettle and then the tea can be brewed indoors. Some basic rules for the care of this type of non-kettle kettle are:

1. Never put the kettle on the stove, the brittle enamel coating will be damaged

2. Do not use rough, abrasive sponges or dish soap, as it will also endanger the enamel layer

3. Do not put the kettle in the dishwasher or microwave

4. To clean, simply rinse with warm water and dry with a clean cloth

5. Never add cold water to a glass of warm water.

Guidelines for caring for a Tetsubin Teapot

A kettle-type tetsubin teapot and cast iron kettles can be safely used on the stove. However, there are also some rules to follow to care for and clean the kettle:

1. Do not leave water in the kettle for long periods of time.

2. Do not rub the inside of the kettle with anything to clean it, just pour the water and let it dry.

3. The outside of the kettle can be kept beautiful simply wipe it with a cloth moistened with a little tea.

4. Never add cold water to a hot kettle. 

6 Awesome Japanese Cast Iron Teapots from Iwachu Under $100.

Ps. If you are not a fan of cast iron & want a plastic free option make sure to check out our post TOP 5 The Best Glass Kettles With No Plastic


  1. https://pathofcha.com/blogs/all-about-tea/all-about-the-japanese-cast-iron-teapot-tetsubin
  2. https://topictea.com/blogs/tea-blog/everything-about-japanese-cast-iron-teapots-tetsubin/
  3. https://blog.culturalelements.com/use-tetsubin-japanese-kettle/  
About the author

I'm Su, a tea enthusiast, long-term traveler, business strategist, and furry mom of two. I'm on this journey to learn the "right" and the "wrong" ways to tea, to ask the "dumb" questions, to hear the stories about people & their connection to tea & to find ways to incorporate it into my life. The Tea Tasting Club is all about tea & product reviews, tea recipes, and providing helpful tea information.


Japanese Teaware, Teapots

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