Embedding New Encounter Value in Discarded Sake Bottle Caps (Crown Caps) — Aichi's Watanabe Shuzo's Vision of "Relationships That Don't End with Consumption"
Aichi Prefecture's Watanabe Shuzo, a long-established sake brewery, hosts an exclusive annual customer appreciation event for 150 people. Participants are invited via serial numbers on sake bottle caps, aiming to build a lasting relationship beyond consumption.
📋 Article Processing Timeline
- 📰 Published: April 30, 2026 at 19:00
- 🔍 Collected: April 30, 2026 at 10:31
- 🤖 AI Analyzed: April 30, 2026 at 20:47 (10h 16m after Collected)
Crown caps engraved with Japanese era names and serial numbers
On Tuesday, April 14, 2026, 150 men and women gathered in the "Tsuru no Ma" hall of Hotel Nikko Osaka. They hadn't purchased special tickets.
Instead, the serial numbers engraved on the crown caps of the Junmai Daiginjo "Yasaka no Sake Kotobuki" transformed into an invitation for this one-night-only event.
As domestic sake shipments decline to less than one-third of their peak, Watanabe Shuzo Co., Ltd., an established sake brewery in Aisai City, Aichi Prefecture (founded in 1865, Representative Director Eiji Yamada), is challenging the conventional wisdom of consumption that "ends with selling a product."
■ Breaking away from "Buy, Drink, and It's Over" — A Mechanism Where Crown Caps Create "Relationships"
Many modern products fulfill their purpose upon purchase and consumption. However, Watanabe Shuzo has fundamentally re-evaluated this structure.
The Junmai Daiginjo "Yasaka no Sake Kotobuki," produced by the brewery, is limited to 10,000 bottles annually, each fitted with a serial-numbered crown cap.
By keeping this crown cap, purchasers become eligible for a lottery held in March of the following year, granting them the right to participate in a fully invitation-only event held every April.
This is not merely a promotional activity. It is a mechanism to transform a relationship that "ends with a single purchase" into "a relationship that deepens over time."
The beginning of "connections" fostered by Kotobuki.
■ 150 Guests Experienced the "1st Spring Customer Appreciation Festival"
On April 14, 2026, this mechanism materialized for the first time.
A total of 150 invited purchasers, selected by lottery, gathered at the venue, sharing time with the brewery owner.
On the day, the following two types of sake were offered:
- 100% Yamada Nishiki brewing (for sale)
- 100% "Niko Maru" food rice brewing (not for sale)
Both were Junmai Daiginjo with a rice polishing ratio of 40%. Despite identical conditions, the event was structured for participants to personally experience the impact of different raw materials on the flavor.
In particular, "Niko Maru" was an unreleased sake not sold in the general market, offered as a special drink that could only be experienced at this event.
This design, which promotes understanding through experience rather than explanation, reflects the very philosophy of the brewery's sake making.
Atmosphere at reception
Our valued guests who participated
■ From "Consumers" to "Stakeholders" — The Value of Participation Created by Lottery
A feature of this event is its invitation-only nature, determined by lottery.
Those gathered at the venue were not just mere purchasers, but individuals who had gone through the process of "not knowing if they would win."
This process enhances the value of the participation experience itself.
Eiji Yamada, Representative Director of Watanabe Shuzo, spoke as follows on the day:
"I want to meet those who picked up this sake every year. I believe 'Kotobuki' is not just a product, but something that connects people."
Watanabe Shuzo positions this event as the "1st" and plans to continue holding it every April in the future.
Hotel Nikko Osaka 5F Tsuru no Ma
■ Decision to Hold Next Year's Event and Release of Event Footage
Watanabe Shuzo has clearly stated its policy to continue holding this event annually, not as a one-off, but as "a place where the brewery and customers reunite every year."
The 2nd "Spring Customer Appreciation Festival" (scheduled for April 13, 2027, at Hotel Nikko Osaka) has already been decided, and invitations will be issued via a crown cap serial number lottery, similar to this year.
Furthermore, footage of the 1st event held on April 14, 2026, has been released on the official YouTube channel.
The atmosphere of the venue, the expressions of the participants, the sense of unity created at the moment of toasting, and parts of the special experience, including the unreleased "Niko Maru," can be viewed in the video.
Official YouTube Channel
Yasaka no Sake Kotobuki [Watanabe Shuzo Aichi]
Channel Name: Yasaka no Sake Kotobuki [Watanabe Shuzo Aichi]
Many eye-popping magic tricks
The banquet reached its climax
Closing remarks by Representative Director Eiji Yamada
Hotel Nikko Osaka 5F Tsuru no Ma Entrance
■ A Sake Brewery Rooted in Aisai City, Aichi Prefecture, and the Kiso River Basin
Watanabe Shuzo Co., Ltd. was founded in 1865 (Keio Gannen). It is a sake brewery that has been supported by the abundant water and agricultural land of Aisai City, Aichi Prefecture, in the Kiso River basin.
This region has long been known for its rice cultivation, a land where sake brewing and agriculture have been closely intertwined.
The brewery currently concentrates its production on a single product, Junmai Daiginjo "Yasaka no Sake Kotobuki," under the policy of "producing only one sake."
Without pursuing increased production volume or scale, the company focuses its management resources on maximizing quality and experiential value.
Sake brewed solely for celebration: Yasaka no Sake Kotobuki
■ From "Things" to "Experiences," from "Consumption" to "Relationships"
This initiative is not limited to a single sake brewery.
- Demand for sake
Keywords:
On Tuesday, April 14, 2026, 150 men and women gathered in the "Tsuru no Ma" hall of Hotel Nikko Osaka. They hadn't purchased special tickets.
Instead, the serial numbers engraved on the crown caps of the Junmai Daiginjo "Yasaka no Sake Kotobuki" transformed into an invitation for this one-night-only event.
As domestic sake shipments decline to less than one-third of their peak, Watanabe Shuzo Co., Ltd., an established sake brewery in Aisai City, Aichi Prefecture (founded in 1865, Representative Director Eiji Yamada), is challenging the conventional wisdom of consumption that "ends with selling a product."
■ Breaking away from "Buy, Drink, and It's Over" — A Mechanism Where Crown Caps Create "Relationships"
Many modern products fulfill their purpose upon purchase and consumption. However, Watanabe Shuzo has fundamentally re-evaluated this structure.
The Junmai Daiginjo "Yasaka no Sake Kotobuki," produced by the brewery, is limited to 10,000 bottles annually, each fitted with a serial-numbered crown cap.
By keeping this crown cap, purchasers become eligible for a lottery held in March of the following year, granting them the right to participate in a fully invitation-only event held every April.
This is not merely a promotional activity. It is a mechanism to transform a relationship that "ends with a single purchase" into "a relationship that deepens over time."
The beginning of "connections" fostered by Kotobuki.
■ 150 Guests Experienced the "1st Spring Customer Appreciation Festival"
On April 14, 2026, this mechanism materialized for the first time.
A total of 150 invited purchasers, selected by lottery, gathered at the venue, sharing time with the brewery owner.
On the day, the following two types of sake were offered:
- 100% Yamada Nishiki brewing (for sale)
- 100% "Niko Maru" food rice brewing (not for sale)
Both were Junmai Daiginjo with a rice polishing ratio of 40%. Despite identical conditions, the event was structured for participants to personally experience the impact of different raw materials on the flavor.
In particular, "Niko Maru" was an unreleased sake not sold in the general market, offered as a special drink that could only be experienced at this event.
This design, which promotes understanding through experience rather than explanation, reflects the very philosophy of the brewery's sake making.
Atmosphere at reception
Our valued guests who participated
■ From "Consumers" to "Stakeholders" — The Value of Participation Created by Lottery
A feature of this event is its invitation-only nature, determined by lottery.
Those gathered at the venue were not just mere purchasers, but individuals who had gone through the process of "not knowing if they would win."
This process enhances the value of the participation experience itself.
Eiji Yamada, Representative Director of Watanabe Shuzo, spoke as follows on the day:
"I want to meet those who picked up this sake every year. I believe 'Kotobuki' is not just a product, but something that connects people."
Watanabe Shuzo positions this event as the "1st" and plans to continue holding it every April in the future.
Hotel Nikko Osaka 5F Tsuru no Ma
■ Decision to Hold Next Year's Event and Release of Event Footage
Watanabe Shuzo has clearly stated its policy to continue holding this event annually, not as a one-off, but as "a place where the brewery and customers reunite every year."
The 2nd "Spring Customer Appreciation Festival" (scheduled for April 13, 2027, at Hotel Nikko Osaka) has already been decided, and invitations will be issued via a crown cap serial number lottery, similar to this year.
Furthermore, footage of the 1st event held on April 14, 2026, has been released on the official YouTube channel.
The atmosphere of the venue, the expressions of the participants, the sense of unity created at the moment of toasting, and parts of the special experience, including the unreleased "Niko Maru," can be viewed in the video.
Official YouTube Channel
Yasaka no Sake Kotobuki [Watanabe Shuzo Aichi]
Channel Name: Yasaka no Sake Kotobuki [Watanabe Shuzo Aichi]
Many eye-popping magic tricks
The banquet reached its climax
Closing remarks by Representative Director Eiji Yamada
Hotel Nikko Osaka 5F Tsuru no Ma Entrance
■ A Sake Brewery Rooted in Aisai City, Aichi Prefecture, and the Kiso River Basin
Watanabe Shuzo Co., Ltd. was founded in 1865 (Keio Gannen). It is a sake brewery that has been supported by the abundant water and agricultural land of Aisai City, Aichi Prefecture, in the Kiso River basin.
This region has long been known for its rice cultivation, a land where sake brewing and agriculture have been closely intertwined.
The brewery currently concentrates its production on a single product, Junmai Daiginjo "Yasaka no Sake Kotobuki," under the policy of "producing only one sake."
Without pursuing increased production volume or scale, the company focuses its management resources on maximizing quality and experiential value.
Sake brewed solely for celebration: Yasaka no Sake Kotobuki
■ From "Things" to "Experiences," from "Consumption" to "Relationships"
This initiative is not limited to a single sake brewery.
- Demand for sake
Keywords: