What Is a Mentori Furo? The Chamfered Brazier in Japanese Tea

A Mentori furo is a tea brazier with a chamfered edge around its open front. A chamfer is a narrow, sloping face made by cutting away a sharp corner. Here, the name describes the edge of the brazier, not what it is made from or how it supports the kettle.

The classic form belongs to the clay-furo tradition. Specialist references describe it as an open-front, or maekake-type, brazier with the upper edge cut back. Tankosha also lists Mentori furo in its tea-utensil catalogue.

What does mentori mean?

Mentori (面取り) means taking off or chamfering an edge. In a Mentori furo (面取風炉), look at the upper rim around the front opening. Instead of meeting in a sharp corner, the edge has been cut back to form a slope.

The useful clues are the open front, the chamfered rim and the form’s connection with clay braziers. The name tells you about a shape, not a ranking of materials.

Mentori, Dōan and Mayu: what is different?

A Dōan furo is associated with Sen Dōan and a deeply open front. Mentori describes the treatment of an edge. Specialist references also use the name Mentori Dōan furo: the two names can describe different features of the same object.

A Mayu furo has an eyebrow-like band above the opening. That is a different feature from a chamfer. Looking at the actual rim and opening is more useful than treating every open-front brazier as the same form.

What is a Rikyū Mentori furo?

Specialist references associate an early Mentori form with Sen no Rikyū. Tankosha’s tea dictionary also names the Rikyū Mentori furo in its entry on Toyama ash.

These sources support different parts of the description. The dictionary documents the named brazier and its ash pairing; the fuller explanation of the rim comes from specialist utensil references. Neither should be read as proof of every detail of the form’s history.

Must a Mentori furo be made from clay?

The classic form comes from the clay-brazier tradition, but later versions can be made in bronze or iron. A metal version can keep the same chamfered shape.

Changing the material can change weight, surface appearance and how the object is used in a tea setting. It does not, by itself, remove the feature that gives Mentori its name. Tankosha’s catalogue includes both conventional and electric Mentori furo; an electric version does not imply the same procedure as a charcoal arrangement.

Why is it associated with Toyama ash?

Tankosha’s entry on Toyama ash specifically names the Rikyū Mentori furo. In this ash arrangement, a mountain-like shape rises at the far side of the brazier. The open front lets that shape be seen.

That is a documented pairing, not a rule that every Mentori furo must always use Toyama ash. Haigata, or shaped ash, also depends on the school, season, material, kettle and exact utensil.

What does the chamfer change?

The rim frames the view into the brazier: the ash, charcoal, a gotoku kettle trivet where one is used, and the kama, or iron tea kettle. A small change to the edge changes the transition between the outside of the brazier and the space within it.

Does Mentori describe a kettle support?

No. A kirikake arrangement describes a matching kettle and brazier that fit together without a separate gotoku. Mentori describes the rim.

To understand a brazier, ask separate questions: What shape is it? What is it made from? How is the kettle supported? How is the ash arranged? The name of one feature does not answer all four.

Do you need one to make matcha at home?

No. Mentori furo belongs to the wider world of tea-room utensils and fire arrangements. Its interest lies in how the opening, edge, ash and kettle work together, not in being essential equipment for a simple bowl of matcha.

Remember the edge: Mentori names the chamfer, not the whole tea arrangement.

Sources and further reading

• Tankosha tea-utensil shop — Mentori furo
• Tankosha tea-utensil shop — Electric Mentori furo
• Tanko+ / Tankosha Tea Dictionary — Toyama ash and Rikyū Mentori furo
• Imaya Seikōen — Specialist description of Mentori furo
• Tankosha — Chadōgu Hyakka 2: Kama, Ro & Furo

Header photograph: Taylor Heery via Unsplash. It shows clay being shaped on a potter’s wheel as a clay-working reference; it does not depict a verified Mentori furo.