Edo Kiriko "Kasane Yarai" Cut-Glass Old Fashioned Pair (Red + Blue) — Tokyo Traditional Craft by Kimoto Glass (Ø 83 × H 67 mm, 200 ml each)
A matched pair of Tokyo Edo Kiriko (江戸切子) cut-glass old-fashioned tumblers — one red, one blue — by Kimoto Glass Tokyo (木本硝子), the Sumida-based glass house whose Edo Kiriko line carries the Tokyo Cut Glass Industry Cooperative's traditional-craft cert (the gold round sticker visible on each glass).
About Edo Kiriko
Edo Kiriko is one of Japan's nationally-designated Traditional Crafts (国指定伝統工芸品), originating in Tokyo's Edo period (1603–1868) and produced in continuous succession by craft families ever since. The technique starts with a 二重構造 / cased-glass blank: at 1,350°C, a transparent core layer is sheathed by a thin colored outer layer. A trained kiriko cutter then hand-cuts every facet, line, and lattice into the colored skin — and the deeper the cut goes, the brighter the clear inner glass shows through, producing the high-contrast colored-on-clear pattern that defines the craft.
The pattern — Kasane Yarai
The supplier's name for this design is 重ね矢来 (Kasane Yarai), or "Layered Yarai." Yarai (矢来) is one of Edo Kiriko's oldest motifs — a tight diamond-crosshatch lattice originally meant to evoke the slatted bamboo fencing of a traditional Tokyo machiya street. Kasane (重ね / "overlapping") arranges two of these yarai bands around the upper body so they curve and intersect. Below the lattice runs a row of broad oval thumb-cut bevels; the foot is finished with a deep twelve-point star burst that catches table-light through the clear base layer (visible looking straight down into either glass).
The pair
The red and blue glasses are cut to the identical pattern. Together they make a natural his-and-hers / kanpai / red-vs-blue pairing — well suited to whiskey, bourbon, single-malt, shōchū-on-the-rocks, plum wine, or non-alcoholic mocktails. The 200 ml capacity is sized for a generous on-the-rocks pour with one or two large ice cubes.
About the material — soda glass, not lead crystal
Edo Kiriko is traditionally made in two material classes: lead crystal (クリスタルガラス, more refractive, heavier) and soda-lime glass (ソーダ硝子, lighter, lead-free, the original Edo-era material). This set is the soda-lime glass body — supplier-stated 素材：ソーダ硝子. The craft execution is the same — every facet hand-cut by a kiriko cutter — but the body is the lighter soda-glass class, which we mention so you know exactly what you're buying.
Care
The supplier does not specify microwave or dishwasher use, and we recommend hand-wash only — warm water with mild dish soap, soft cloth — to protect the cut edges and the cased color layer. Avoid rapid temperature changes (no boiling water; no freezing solid); avoid abrasive sponges. Cut crystal and kiriko share the same care rule: thermal shock and dishwasher abrasion are the two main risks.
• Made by Kimoto Glass / Edo Kiriko in Tokyo, Japan, curated by ZenKiln.
