The Craft of Iwashita Muneaki – Sixth Generation Iwashita Seitou
This Carbonized Rippled Ridge Cup, crafted by Muneaki Iwashita, is a striking example of contemporary Mashiko pottery. Made from local Mashiko clay, the cup is shaped on the wheel and finished with finely carved shinogi (ridge) patterns arranged in a flowing, ripple-like design that enhances both texture and visual depth.
During firing, the cup undergoes carbonization, a special reduction process that gives the surface its distinctive dark, smoky tones. Subtle variations of grey, charcoal, and metallic highlights emerge naturally, making each piece completely unique. The tactile ridges provide a comfortable grip, while the balanced form makes it ideal for tea, coffee, or warm drinks.
A beautifully expressive piece of Mashiko-yaki, combining deliberate craftsmanship, traditional firing techniques, and a bold, modern aesthetic.
*Please note that slight variations in size and color may occur due to the firing process. We appreciate your understanding before making your purchase.
*To preserve the quality of this product, please avoid using in a microwave.
*To preserve the beauty of this piece, please hand wash.
*After use, please wash as soon as possible and dry thoroughly before storing.
*There might be variations in colour and texture between individual items.
Iwashita Seitou – Handcrafted Mashiko Pottery
Iwashita Seitou is a historic Mashiko-based pottery studio with a lineage spanning six generations. Known for its warm, handcrafted ceramics inspired by nature and everyday life, the studio continues its tradition under the craftsmanship of 6th-generation potter Iwashita Muneaki. Using traditional Mashiko-yaki techniques, Iwashita Seitou creates pieces with gentle forms, natural glazes, and a playful charm—often featuring animals or organic shapes. Each piece reflects the deep ceramic heritage of Mashiko while offering a modern, approachable style loved by collectors of Japanese craft.
Mashiko-yaki (ware) is a style of Japanese pottery originating from Mashiko, a town in Tochigi Prefecture known for its rich clay and centuries of ceramic tradition. Characterized by thick, durable clay, simple yet elegant forms, and natural glazes, Mashiko-yaki is both functional and artistic, perfect for everyday tableware or collectible pieces.
Unlike ultra-delicate ceramics, Mashiko-yaki emphasizes sturdiness, warmth, and a tactile feel, reflecting the hands-on approach of the artisans. Many pieces are handmade in family-run studios, preserving traditional techniques while experimenting with contemporary designs.
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