Monteur and Takeshita Seika Team Up on a Black Mont Blanc Éclair, Launching August 1

Monteur, a Yashio, Saitama-based company that manufactures and sells Western-style fresh confectionery, is collaborating with Takeshita Seika Co., Ltd. (headquartered in Ogi, Saga) on a Black Mont Blanc Éclair. The éclair goes on sale for a limited time from Saturday, August 1 to Monday, August 31, 2026, at supermarkets and select convenience stores nationwide.

Last year, as part of a special project marking Monteur's 70th anniversary, the company collaborated with Takeshita Seika's Black Mont Blanc ice bar to strong reception. This year's éclair is the second installment of that collaboration, translating the long-loved flavor of Black Mont Blanc into a chilled treat built around smooth chocolate and mellow milk cream.

Monteur also operates a factory in Soja, Okayama Prefecture, and through that connection is running a parallel collaboration with Shimizuya Foods, a member of the Takeshita Seika group also headquartered in Okayama. Known for its long-loved cream buns, Shimizuya is releasing a cream bun inspired by Monteur's long-running "Yaki Purin Mont Blanc" (Baked Pudding Mont Blanc) product.

The Black Mont Blanc Éclair is built around the flavor of Black Mont Blanc, the ice bar loved for its combination of crunch, chocolate, and refreshing vanilla ice cream. The pastry shell is filled with a vanilla-flavored milky cream, coated in chocolate, and topped with cookie crunch. The milk cream blends whipped cream with house-made custard, condensed milk, and vanilla essence, delivering a rich, milky vanilla sweetness alongside a light, refreshing finish. The fragrant cookie crunch on top of the chocolate coating uses Takeshita Seika's original recipe. Available only for a limited time, it's an ice-cream-like sweet built for the heat of summer.

Under its corporate message of being "Committed to Happiness," Monteur will keep creating excitement for snack time and building smiles around the world.

Product Overview

Black Mont Blanc Éclair

• Suggested retail price: ¥194 (tax included; ¥248 in Okinawa)
• Sales period: August 1 (Saturday) to August 31 (Monday), 2026
• Sales regions: Tohoku, Kanto, Chubu, Kinki, Chushikoku, Kyushu, Okinawa

Note: Some stores within the listed sales regions may not carry this product.

A Parallel Collaboration From Shimizuya Foods

Cream Bun: Yaki Purin Mont Blanc

• Category: Confectionery bread
• Suggested retail price: ¥281 (tax included)
• Sales period: From August 1 (Saturday), 2026, while supplies last
• Sales regions: Nationwide

This cream bun pairs Monteur's popular "Yaki Purin Mont Blanc" (Baked Pudding Mont Blanc) with Shimizuya's signature cream bun. Baked into a soft, fluffy texture using dough developed for extra tenderness, it combines a baked-pudding-flavored cream with sweet chestnut paste.

About Shimizuya Foods

Founded in 1959 and headquartered in Okayama City, Okayama Prefecture, Shimizuya Foods is a long-established cream bun specialist. As part of the Takeshita Seika group, it has built a following across generations. Under a philosophy of creating products that are "delicious" and "fun" to bring happiness to customers, skilled artisans shape the dough and pipe the cream by hand for every bun. Its signature Fresh Cream Bun wraps soft, fluffy bread around a generous amount of smooth fresh cream and sells tens of thousands of units a day. Long loved in its home base of Okayama, the brand has since built a following nationwide.

About Monteur

Founded in 1954, Monteur manufactures and sells chilled sweets built around cream puffs. Guided by its corporate message "Committed to Happiness," the company sells a wide range of treats — including cream puffs, éclairs, and roll cakes — under its Small Western Confectionery Shop brand at supermarkets and convenience stores. Its cream puffs and éclairs are especially popular staples: the Milk and Egg Custard & Whipped Cream Puff ranked No. 1 in sales for the chilled cream puff and éclair category in fiscal 2025, and the Milk and Egg Éclair ranked No. 1 in sales for the chilled éclair category in fiscal 2025. Monteur's sweets have now held the top spot in the éclair category for 27 consecutive years.

Source: Nikkei POS data for the "Chilled Cream Puff / Éclair" category, based on Monteur's own research using data from January 1999 through December 2025.