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  4. 8 Best Japanese Cast-Iron Teapots in 2023 (Kitsusako, Iwachu, and More)
  • 8 Best Japanese Cast-Iron Teapots in 2023 (Kitsusako, Iwachu, and More) 1
  • 8 Best Japanese Cast-Iron Teapots in 2023 (Kitsusako, Iwachu, and More) 2
  • 8 Best Japanese Cast-Iron Teapots in 2023 (Kitsusako, Iwachu, and More) 3
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8 Best Japanese Cast-Iron Teapots in 2023 (Kitsusako, Iwachu, and More)

Are you a tea lover that wants to make Japanese tea in the traditional way? Do you want to maximize the experience? Then consider Japanese cast-iron teapots! Japanese cast-iron teapots offer several unique advantages, such as imparting extra flavor to your tea, heating quickly, and retaining heat for longer. They’re also intricately designed, and some are even beautiful enough to be gifted or served during parties. They can also add an extra layer of authenticity to your green tea, helping set the mood when you want to enjoy a quiet cup of tea.

The right teapot for you will depend on its type, size, and various other factors. To help you decide, we’ve compiled a list of the best 4 cast-iron Japanese teapots online. Our favorite is Kitsusako’s Nanbu Tekki Teapot because of the quality of its ironware and its convenient size. Continue reading to see what else we recommend, and be sure to check out the buying guide!

Last updated 07/25/2023
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Table of Contents

What Is a Japanese Teapot?

What Is a Japanese Teapot?

Japanese cast-iron teapots have a long history, with their origins dating back to around the late 17th to early 18th century, and have since become a long-standing staple in the art of Japanese tea ceremony. Designs can range from simple and plain to decorative and embellished, with earlier teapots usually being the former, gradually incorporating more design elements from the 19th century. 

The Tohoku region is well-known for cast iron production, and cities such as Yamagata, Morioka, and Mizusawa are notable producers. Morioka city is especially famous for producing ironware known as "Nambu tekki." It's known for its rust resistance, longevity, insulation, and heat distribution.

Japanese cast-iron teapots, similar to cast-iron skillets, can be used for generations if cared for properly and can make your Japanese tea, like green tea or hojicha, taste better, thanks to their properties.

Japanese cast-iron teapots come in two variants, tetsubin and tetsukyusu. While both are made of cast iron, they have different uses and features, such as the following:


  • Used to boil water for pouring onto tea leaves
  • Can be heated directly
  • Imparts iron and extra flavor to water
  • Requires more care to prevent rust
  • Used to brew tea inside the pot
  • Cannot be heated directly
  • Often coated with enamel on the inside
  • Requires less maintenance and care

How to Choose a Japanese-Style Cast Iron Teapot - Buying Guide

There is a lot to consider when purchasing a Japanese-style cast iron teapot, including the style, capacity, and handle design.

① Tetsubins Enhance the Flavor of Water but Are Not for Brewing Teas

Tetsubins Enhance the Flavor of Water but Are Not for Brewing Teas

Tetsubins are not coasted with enamel on the inside. However, they may be glazed with urushi lacquer, a coloring material that also aids in preventing corrosion. The lack of enamel means that tetsubins can be heated directly on the stovetop.

However, tetsubins are not meant for brewing tea. Tetsubins are used to boil water, and the tea is brewed in a different vessel. This means that you can also use a tetsubin to make hot water for coffee or instant noodles!

Usually, water molecules attach to each other, giving water its plain taste. In a tetsubin, water molecules bond with the cast iron's metal ions. These bonds affect the viscosity and surface tension of the water, resulting in a stronger water taste. Our mouths interpret this flavor as deeper, sweeter, and longer-lasting.

Additionally, research has proven that cooking foods for a long time in cast iron skillets increased the iron content significantly. Therefore, boiling water in a tetsubin may also leave traces of iron in the water, which may be beneficial for those with a deficiency.

Tetsubins can last a long time if maintained properly. However, they will develop red and white spots as a result of calcium carbonate buildup. Though it's visually scary, this is actually a good sign! This buildup contributes to the taste while preventing rust. 

② Consider Features Like the Size, Handle, and Accessories

Consider Features Like the Size, Handle, and Accessories
Cast iron teapots come in a variety of capacities, ranging anywhere from two to over 12 cups. Most teapots hold around three to five cups of liquid. 

We recommend going for at least a mid-range size as most manufacturers urge drinkers not to fill over 70 percent of the total capacity to prevent spills when boiling. However, keep in mind that cast iron is heavy, so larger teapots may be more difficult to pour.

For handles, most are made from the same iron material as the body. Some handles may get hot if the teapot is heated directly on the stove, particularly when heated for a long time. Some teapots, especially manufactured tetsukyusus, use anti-scalding material such as twine to prevent burns.

Some teapots also come in a set with additional items like matching tea cups, saucers, trivets, and even lid holders. If you plan on gifting a teapot to someone or if you want to impress your guests, consider going for a complete set. 

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Best Japanese Cast-Iron Teapots Ranking

Here are the best Japanese Cast-Iron Teapots, ranked according to Compare the 4 Best Japanese Cast Iron Teapots (as of 11-04-2022). The products are ranked independently by mybest.
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Key features


Nanbu Tekki Teapot

Kitsusako Nanbu Tekki Teapot 1枚目

Best All-Around Tetsubin for Small Groups



Nambu Tekkettle

Oigen Nambu Tekkettle 1枚目

Best Classic Nambu Tetsubin



Octagonal Iron Pot

Itchu-do Octagonal Iron Pot 1枚目

Best Cast Iron Teapot with a Unique Shape


Old Dutch

Cast Iron Hakone Teapot

Old Dutch Cast Iron Hakone Teapot 1枚目

Best Large-Capacity Cast Iron Teapot

Product details
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KitsusakoNanbu Tekki Teapot

Nanbu Tekki Teapot Image 1
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Best All-Around Tetsubin for Small Groups


  • Comes with a non-slip trivet
  • Stovetop-safe
  • Interior is coated with lacquer to prevent rust 
  • Nambu cast iron 


  • Reports that the lid’s knob can get hot

This is a non-enameled Nambu cast iron teapot, a type of ironware known for its craftsmanship. It has a 3.4 cup capacity, making it an excellent tetsubin choice for one person. It also comes with a trivet that has feet made of rubber, which prevents it from slipping.

Some reviewers commented that the knob can get hot, making it dangerous to touch. However, others were impressed by how the water tasted milder than electric tea kettles. Many also felt that it was a solid tetsubin for first-time buyers. 

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OigenNambu Tekkettle

Best Classic Nambu Tetsubin

  • Authentic Nambu style production and design
  • Thick bottom prevents warping
  • Stovetop-safe


  • Reports say that it’s a little heavy
  • Instructions are in Japanese

This tortoiseshell-style teapot is made in Iwate, one of the most famous areas for cast iron in Japan. It has a thick bottom, which is good for preventing deformations. Due to the quality of the materials used, this teapot is quite heavy.

Since the instructions are in Japanese, this teapot may be best suited for those who have experience in owning a tetsubin. Overall, however, most loved the quality craftsmanship and compact size. Some also commented that it holds up to continued use very well!


Itchu-doOctagonal Iron Pot

Best Cast Iron Teapot with a Unique Shape


  • Nambu cast iron ware
  • Unique octagonal modern design
  • Coated with lacquer
  • Stovetop-safe


  • Reports that it’s a little heavy

Moreido’s cast iron teapot is uniquely octagonal shape, which may appeal to those who prefer modern design. It's stovetop-safe, and the inside of the pot is coated with urushi lacquer to prevent corrosion

Some reviewers commented that this kettle is quite heavy. In spite of this, many appreciated the unique design and compact size. They also reported that it makes delicious mild-tasting water.


Old DutchCast Iron Hakone Teapot

Best Large-Capacity Cast Iron Teapot


  • Holds 12.7 cups 
  • Enameled interior for easier upkeep
  • Available in several sizes and styles


  • Contradicting product information

This cast iron teapot is made by Old Dutch and has a large capacity that's perfect for groups or families. Plus, the interior is coated with enamel for easier maintenance. 

Some product descriptions say it's stovetop-safe; however, due to the enamel, we don't recommend this. Overall, most reviewers were glad to find a cast iron pot of this size, confirming that it's great for avid tea-drinkers. They also liked that it's easy to use and clean.

Use Your Kettle With These Japanese Teas!

What's a teapot without tea? Now that you've got your Japanese cast-iron teakettle, it's time to look at the best Japanese teas to brew with it. Check out our buying guides and top picks from the links below.

Top 4 Japanese Cast-Iron Teapots

No. 1: Kitsusako | Nanbu Tekki Teapot

No. 2: Oigen | Nambu Tekkettle

No. 3: Itchu-do | Octagonal Iron Pot

No. 4: Old Dutch | Cast Iron Hakone Teapot

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The descriptions of each product is referenced from the content available from the manufacturer, e-commerce sites etc.

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