Otani YakiOtani Ware

There was order to do Nanjing, Karatsu (burning of porcelain) from (1780) Tokushima feudal lord in 1780 and hired a lot craftsman from Kyushu and made feudal clan kiln and started production of porcelain,
Because hometown did not have materials, loss was big and did shut kiln in a short term. We employ craftsman of Shigaraki Yaki, and *denheijiheiei learns Sue work technology in 1784 (Tenmei 4) and builds ascending kiln to great Tanimura (current Osacho, Naruto-shi), and it is done with the creation of Otani Yaki afterwards that we started production of earthenware (people kiln).
Extensive products are produced from Omika to sloppy container for day after economy and a variety of changes today in the wartime in indigo plant pot, the Taisho era in the Meiji era.

When the head of the Tokushima fief ordained that porcelain in the style of Nanking and Karatsu Yaki should be produced in 1780, craftsman were brought in from the island of Kyushu, a kiln was built and production began.
Work soon ceased, however, because the right kind of clay was not available in the immediate vicinity and many of the pieces were damaged during firing. Then, in 1784, Heijibei Nohda employed some potters who were making Shigaraki Yaki in order to learn their techniques and a climbing kiln was built in the village of Otani, which is today part of Ohasa-cho in the city of Naruto City. The pottery that was produced marked the beginning of what is now known as Otani Yaki. By the end of the 19th and during the beginning of the 20th century, large jars for indigo dye were being produced. Then during the 1920s and 1930s, the war led to a number of chages, which have resulted in a wide variety of goods ranging from large jars down to many other smaller household items being produced today.

Otani Yaki, which has been in production for the last 200 years, is now one of the most representative forms of pottery on the island of Shikoku. To make the large pots for water-lilies and even larger jars, into which a person can easily fit, a special wheel is used. While one person lying on their side turns the wheel with his feet, another gradually forms the piece with large coils of clay. This way of forming pots and jars is particularly well-known and the size of the climbing kiln in which they are fired is said to be the largest in the country.
The sake cups, too, are rather special. Formed with the upmost skill on a regular potters wheel, they are very robust despite the fact that they are very thin.

A number of clays are used. One of the principal clays is one known as Himeda clay, while Sanuki clay is also used along with Hagiwara clay, which is a stratified clay rich in iron. Combinations of limestone, wood ash, feldspar, silica and iron are used for the glazes, which are either applied by dipping the piece in the glaze or dripping glaze over it. All of the production is done by hand and a number of different historical techniques and tools are used to form and decorate pieces, including such things as a wheel, a simple molding tool used in forming a pot or jar from the inside, a board placed on a wheel to assist in the making of large pots and jars, a rough cloth, a plane, a piece of leather, a thread to cut the clay, a brush and a ladle.

  • Notification

    skills and techniques

    Womb soil does elutriation in wet process, and produce. Produce without making elutriation in dry process.

    Molding is thing by potter's wheel molding.

    Is about to soak glaze hook or drain; thing by credit. In this case, it be said that glaze to use mixed Himeda clay, lime, soil ash, feldspar, silica stone, iron.

    Raw materials

    It be said that potter's clay to use has materials which are equal to "Hagiwara clay" "Sanuki clay" "Himeda clay" or these.

  • Work scenery


    We settle Otani Yaki using soil to produce in hometown of Tokushima.
    There are two manufacturing methods of dry process not to perform wet process and elutriation to perform elutriation (suihi) in Otani Yaki.
    We introduce process of method called wet process here.

    Process 1: Crush


    We mine soil sample and we dry and crush finely.

    Process 2: Sieve (sieve)

    We sift soil which we crushed and are refined.

    Process 3: Elutriation

    We put refined soil in the water tank and drain for different cistern under agitation and collect after having gone by sieve and precipitate potter's clay. We leave unattended until we put potter's clay in forest bowl and become clay-formed hardness.

    Process 4: Soil kneading on fire (we work out soil)


    We stamp soil which became into a clay form with foot and make uniform hardness. (wild kneading on fire)
    We rub by hand next and pull air in clay and do in state that it is easy to mold. (chrysanthemum kneading on fire)

    Process 5: Molding


    Video is played when we click image

    We make form on potter's wheel with clay after soil kneading on fire by hand.
    When we make particularly big product characterizing Otani Yaki, we mold with two people using technique called shin potter's wheel.

    Process 6: Drying

    We dry in the shade indoors until we dry moderately and dry by the sun afterwards.
    In the case of big game including pot and bowl, we dry outdoors indoors for 2-3 days for approximately 20 days.
    We dry small thing case including bottle and cup outdoors indoors on 1st for approximately 2-7 days.

    Process 7: hodokoshiuwagusuri

    We hang glaze to product after drying. We hang method to hang glaze live without doing unglazing and are with (raw cliff). For method of hodokoshiuwagusuri, soak instrument into glaze; "not finished dipping," there is which is about to divert glaze to with ladles "not finished draining". *After having done "it is unglazed", in the case of product which does not perform straight credit, we hang glaze.
    We bake "it is unglazed" by kiln at around 800 degrees Celsius for 8-16 hours.

    Process 8: Kiln filling

    We fill kiln with products which we finished of hodokoshiuwagusuri.

    Process 9: Burning

    We bake at high temperature of 1,230 degrees Celsius.
    In the case of ascending kiln, in the case of electric kiln, gas kiln, it takes 1-2 days for burning in the 5-6 night and day.

    Process 10: Inspection

    We inspect product of baking and remove defective article.

    Process 11: Completion



  • ・Close-up



Industrial art object name Otani Yaki
Phonetic symbol otaniyaki
Classification of industrial art object Ceramics
Main product Bottle and cup, tortoise, bowl
Main production area Tokushima / Naruto-shi
The designation date September 10, 2003

Contact information

■local production associations

Association of Otani Yaki Sue work
3, Nishidai, Oasachootani, Naruto-shi, Tokushima
The Oasa-cho business and industry society
TEL: 088-689-0204
FAX: 088-689-0213

■Associated exhibit space, facility


Otani Yaki is one of the earthenware representing Shikoku that is continued burning for approximately 200 years in Osacho, Naruto-shi, Tokushima. What stature molds using "shin potter's wheel" (it becomes set for two people, and one is in charge of molding and one lies and kicks with foot and turns potter's wheel) for production of big game earthenware of a certain pot and water lily bowl is particularly famous, and, as for the size of ascending kiln baking it, all Nihonichi of them is described as. In addition, it is characteristic to have good bottle and cup while being very thin by precise potter's wheel technology.

Otani yaki, which has been made in the Oasa-cho district of Naruto city in Tokushima Prefecture for about 200 years, is one of Shikoku’s most iconic potteries. Large-size jars and bowls for water plants that can reach a person’s height are made using giant “ne-rokuro” potter's wheels (manned by two people, one in charge of molding while the other lies and turns the wheel with his or her feet) and are then baked in a large ascending kiln reputed to be the largest in Japan. In addition, liquor vessels, thanks to very elaborate turning techniques, have the characteristic of being both very thin and yet very sturdy.

How to make

We are about to soak Hagiwara clay with much iron content, Sanuki clay and Himeda clay using glaze which mixed Himeda clay, lime, soil ash, feldspar, silica stone, iron as main material with sedimentation clay and we drain and hang glaze by credit and do Otani Yaki. Main processes of Otani Yaki hang crush, sieve, elutriation, soil kneading on fire, mixture, molding, drying live, and, by unglazing, hodokoshiuwagusuri, kiln filling, burning, inspection, each process is performed by hand, and potter's wheel, iron, tortoise board, cloth, plane, cowhide, cutoff string, brush, traditional tool such as ladle are used.

The main raw materials of Otani yaki are clays of Hagiwara, Sanuki and Himeda which are sedimentary clay very rich in iron. The glaze used is composed of Himeta clay, lime, wood ash, feldspar, silica and iron, which is applied by dip or flow coating. The main stages of Otani yaki are, crushing, sieving, levigation, kneading, mixing, molding, drying, green-ware glazing, bisque-firing, glazing, kiln-loading, firing and inspecting, each one of which is performed manually using traditional tools such as potter's wheels, trowels, kameita, cloth, planes, leather, cut yarn, brushes and ladles.