Cookhouse and Dia Bakery to Hold "80th Anniversary Thanksgiving Fair" Second Round! Popular Products to be "80 Yen Off" on Wednesday, July 8

Dia Co., Ltd. (Head Office: Shin-Imasato, Ikuno-ku, Osaka; President: Shunsuke Tada), founded in Osaka in 1946 (Showa 21), will celebrate its 80th anniversary in 2026. In May 2026, as a renewed commitment to becoming "the best bakery in Kansai" on this milestone occasion, we refreshed the brand logo of "Cookhouse" for the first time in 26 years. To commemorate this significant milestone and express our gratitude to our customers who have supported us for many years, we are holding an "80th Anniversary Thanksgiving Fair" where popular products will be offered at 80 yen off on the 8th of June, July, and August.

Following the successful first round in June, the second round on Wednesday, July 8, will also feature select popular products at special prices under both the "Cookhouse" and "Dia Bakery" brands.

"80th Anniversary Thanksgiving Fair" Overview

In conjunction with the number "80," we will be selling対象 products at 80 yen off the base price on the 8th of each month over three months.

【Dates】 Monday, June 8, 2026; Wednesday, July 8, 2026; Saturday, August 8, 2026

【Target Products for July 8】

Cookhouse: Frank

Dia Bakery: Dia

*Limited quantities, available while supplies last at each store.

80 Years of Founding: The Inherited Spirit of "Sanmi" and Transformation

Imasato Main Store at the time of opening

Dia Co., Ltd. began with bread manufacturing to "ensure everyone's survival" amidst the post-war food shortage. Over time, its role evolved to "bread for enjoyable eating," and we now serve approximately 7,000 customers daily.

Our bread-making is rooted in the "Sanmi" spirit advocated by our founder. Sanmi refers to the three "mi"s: "Mae-mi" (appearance), "Naka-mi" (taste when eaten), and "Ato-mi" (service received at the store).

In 2023, our 77th anniversary, we brought smiles to our customers with unique promotions. For our 80th anniversary, we planned this Thanksgiving Fair along with a brand logo refresh to express our gratitude to even more customers.

"Okan Pan" Breaks 100 Million Yen in Sales in One Year, Becoming a New Osaka Souvenir Staple

Okan Pan

"Okan Pan," launched in July 2024, was created with the desire to share "Milk Pan" with a wider audience. In just one year since its release, sales have surpassed 100 million yen, and it has been supported by many, including receiving a Bronze Award at the "PR Award 2025." It is establishing itself as a representative new souvenir of Osaka, having been selected as the Osaka representative product for "OSAKA PRIDE PRODUCTS 2025" and certified as an "Osaka Mon (Product) Masterpiece."

Dia Co., Ltd. Brands

● Main Brand "Cookhouse": Breadmaking for Everyday Life

Our core brand, "Cookhouse," operates approximately 25 stores in station areas and major commercial facilities in Osaka and Nara. Our consistent pursuit is "breadmaking that doesn't get boring even when eaten every day." A symbol of this is our signature "Milk Pan," which sells 3,000 units daily. This product continues to be loved by customers across generations. Furthermore, to consistently offer new delights to the discerning Kansai palate, Cookhouse continuously introduces 3 to 5 unique new products to the market each month.

Website: https://www.cookhouse.jp

Instagram: @cookhouse_official

● Sandwich Specialty Store "Dia Bakery": Artisan Dedication and Luxury

"Dia Bakery," a sandwich specialty store, has 4 locations primarily in department store basements. Loved for years as "Sandwich no Dia," this brand embodies our artisan spirit. Our unique strengths lie in meticulous attention to detail, such as using homemade mayonnaise strictly following the founder's recipe and selecting different types of bread to match the characteristics of the fillings. It continues to be cherished by many loyal fans as a slightly luxurious sandwich that adds color to everyday meals.

Website: https://www.dia-pan.com

Instagram: @dia_seipan_official

● Authentic Bakery "D.baguette by parigot &DIA": Bread to Enjoy the Umami of Wheat

A collaboration between "parigot," operated by innovative chef Ryuzo Abe, who has twice represented Japan in the Mondial du Pain world competition, and Dia's Kosuke Nakanishi, who founded the company 80 years ago in Osaka. Using methods that maximize the inherent power of wheat, carefully selecting ingredients like wheat and butter, and precisely designing fermentation times, we bake with the final eating experience in mind. The main products are "D. Baguette," "Tenpaku Shokupan®," and "Croissant." Based on these, we offer about 60 varieties in total.

Website: https://d-baguette.com/

Instagram: @d.baguette_by_parigot_dia

Dia Co., Ltd. Company Profile

Company Name

Dia Co., Ltd.

Founded

April 1946

Company Establishment

October 13, 1952

Capital

20,000 thousand yen

Representative

Shunsuke Tada, President

Number of Employees

89 full-time employees (as of May 2026)

Head Office

2-13-8 Shin-Imasato, Ikuno-ku, Osaka 544-0001