[Tea utensils/tea ceremony tools, charcoal tools] Furnace supplies, Yukiwa tiles, Ameraku, Sasaki Matsuraku kiln

● Dairo (large hearth) is one of the hearths installed in a tea room, and refers to a hearth larger than the official dimensions of 1 shaku 4 sun square.
The large furnace is also called "Ooro."
The hearth is said to have originated from a large hearth that was attached to the kitchen in a Zen temple and used for cooking and heating. Dojinsai of Togudo Hall of Jisho-ji Temple, which is said to be the origin of the thatched teahouse, had a room called "Goirori-no-Ma" that had a three-foot square hearth in the center of a four-and-a-half-tatami room.
Up until Rikyu's time, hearths varied in size, with old-style hearths said to be 1 shaku 5 sun 7.5 bu square, 1 shaku 6 sun square, or 1 shaku 8 sun 6 bu. Large hearths measuring 1 shaku 6 sun, 1 shaku 7 sun 5 bu, 1 shaku 9 sun, and 2 shaku are seen in the Kaiki, but by Rikyu's time they were 1 shaku 4 sun square.
In the Sen family, it is said that Genpaku Sotan divided a tatami mat into seven parts, doubled it, and determined that it was 1 shaku 8 sun square by dividing it into seven parts.
In the Urasenke school, when the 12th head tea master, Gengensai, welcomed the head priest of Chion-in Temple, Soncho Hoshinno (Kachōnomiya), in 1849, the tea was cut in the adjacent six-tatami room for warmth and the thin tea was also served here.
"The standard size of the large hearth is 1 shaku 8 sun square, with a four and a half tatami mat area cut to the left. However, a six tatami mat room would be fine," and it is agreed that the hearth will be cut to the left in a six tatami mat room measuring 1 shaku 8 sun square, and it is only held in the bitterly cold month of February.
It is said to have been popular in northern hearths, and the rim is made from Kitayama cedar logs, while the hearth is finished in a grey colour using Juraku clay mixed with ink.
Facing the hearth, a trivet is placed towards the front right, and on the opposite left corner a Raku-yaki snow wheel tile, favoured by Gengensai, is erected to separate the ash, although old tiles about eight inches in diameter can also be used.
The original Yukiwa tile is made in the Keiiri style, and is amber-colored with carved swirls and gold leaf stamped in the shape of shikishi paper.
A pile of wet ash is placed on the other side of the partition tile and an ash spoon is placed upright. The first charcoal is used to scoop up the wet ash and scoop it into the furnace. While the furnace is in the neutral position, the next batch of charcoal is piled on the other side of the snow wheel tile.
There is also a reverse style of tea ceremony, which was invented by Gengensai.

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Artist: Sasaki Shoraku Kiln
Box: Gift box