MOS Burger Launches First-Ever 'MOS Prefectural Vegetable Festival' in Ishikawa Prefecture Featuring Limited-Time Tomatoes from Local Farms

MOS Food Services Co., Ltd. (President: Eiso Nakamura, Head Office: Shinagawa-ku, Tokyo), the operator of MOS Burger, will host the 'MOS Prefectural Vegetable Festival' from Friday, June 26 to Sunday, June 28, 2026, at all nine MOS Burger locations in Ishikawa Prefecture. The event will feature menu items made with tomatoes produced by 'JA Komatsu City,' MOS's contracted farming partner in Ishikawa. During the same period, Ishikawa-grown tomatoes will also be used at all MOS Burger stores in Toyama and Fukui Prefectures, along with the sale of limited regional products.

'Extra Large Tomato MOS Vegetable Cheese Burger'

'Extra Large Tomato Chili Burger'

This festival, which highlights locally grown vegetables, is held nationwide as a gesture of gratitude to local communities and customers who support MOS Burger stores. This marks the first time the event is being held in Ishikawa Prefecture.

Throughout the event period, all menu items using fresh tomatoes across the three Hokuriku prefectures—Ishikawa, Toyama, and Fukui—will feature tomatoes produced by 'JA Komatsu City' (Komatsu City, Ishikawa Prefecture). Additionally, two limited-time products—'Extra Large Tomato MOS Vegetable Cheese Burger' and 'Extra Large Tomato Chili Burger'—will be sold. These juicy, hearty burgers are available for a limited time only. Furthermore, fresh Ishikawa-grown tomatoes will be sold individually during the event (200 yen per tomato; limited quantity, while supplies last).

Ahead of the event, on Wednesday, May 27, 2026, store owners and managers from the Hokuriku region visited the production site at 'JA Komatsu City.' They directly heard from farmers about the challenges of tomato cultivation and participated in a tomato harvesting experience, deepening their understanding of the vegetables used in MOS stores.

Event Visit Highlights

● 'Extra Large Tomato MOS Vegetable Cheese Burger' (880 yen)

This burger features 100% domestically sourced beef patty and sliced cheese layered over Ishikawa-grown tomatoes, topped with lettuce, sliced onions, and an additional layer of Ishikawa-grown tomatoes. Seasoned with half-calorie mayonnaise and Aurora sauce, this hearty burger allows customers to fully enjoy the freshness of the vegetables.

※ The beef used in the 'Extra Large' burger patties is 100% domestically sourced.

※ The product uses 'half-calorie mayonnaise type'.

※ The cheese has been heat-treated at the factory.

● 'Extra Large Tomato Chili Burger' (880 yen)

This burger features a 100% domestically sourced beef patty placed over Ishikawa-grown tomatoes, topped with sliced onions and a second layer of Ishikawa-grown tomatoes. It is seasoned with Japanese-style BBQ sauce and hot chili sauce, creating a spicy kick that enhances the natural sweetness of the tomatoes.

※ The beef used in the 'Extra Large' burger patties is 100% domestically sourced.

※ The tomato ingredients used in the sauces are not sourced from Ishikawa Prefecture.

<Overview of 'MOS Prefectural Vegetable Festival'>

Sales Period: Friday, June 26 to Sunday, June 28, 2026 (3 days)

Sales Locations: All 24 MOS Burger stores in the Hokuriku region

Ishikawa Prefecture: 9 stores, Toyama Prefecture: 9 stores, Fukui Prefecture: 6 stores

Event Details:

① Use of tomatoes from 'JA Komatsu City' in all menu items containing fresh tomatoes

※ Once the supply of 'JA Komatsu City' tomatoes runs out, tomatoes from other MOS-contracted farms outside the prefecture will be used.

② Limited-time sale of 'Extra Large Tomato MOS Vegetable Cheese Burger' (880 yen) and 'Extra Large Tomato Chili Burger' (880 yen)

※ Sales will end once the supply of 'JA Komatsu City' tomatoes is depleted.

③ Sale of Ishikawa-grown tomatoes (200 yen per piece)

※ Sales will end once the supply of 'JA Komatsu City' tomatoes is depleted.

MOS Food Services is committed to consistently providing delicious, safe, and healthy food paired with 'sincere and smiling service.' Through its made-to-order approach maintained since its founding and product development rooted in Japanese food culture, the company will continue to fulfill its mission: 'Making people around the world happy through food.'

<Reference>

● MOS Food Services Corporate Website: https://www.mos.co.jp/company/

● MOS Group's Environmental and Social Initiatives 'MOS no Mori': https://www.mos.jp/mori/

● Official MOS E-commerce Site 'Life with MOS': https://ec.mos.jp/

※ All prices in this material include tax.