Nakanishi Mfg. Co., Ltd. Constructs Kitchen Facilities for Yokohama's New School Lunch Center, Japan's Largest with 30,000 Meals/Day
Nakanishi Mfg. Co., Ltd. was responsible for the construction of kitchen facilities for the newly established 'Yokohama Junior High School Lunch Center,' Japan's largest capable of serving 30,000 meals per day, in conjunction with Yokohama City's transition to 'universal school lunches' starting April 2026. The introduction of four connected units of the company's unique continuous superheated steam oven 'SV Roaster' and a newly developed specialized school lunch container washing machine simultaneously achieves highly efficient mass cooking, advanced hygiene management, and labor savings.
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- 📰 Published: May 12, 2026 at 19:00
- 🔍 Collected: May 12, 2026 at 10:31
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Nakanishi Mfg. Co., Ltd. (TSE Standard: 5941, Headquarters: Ikuno-ku, Osaka, President: Kazuma Nakanishi), a commercial kitchen equipment manufacturer, was responsible for the construction of kitchen facilities for the newly established 'Yokohama Junior High School Lunch Center' (Japan's largest, serving up to 30,000 meals per day) by Harvest Next Group, in conjunction with the transition to 'universal school lunches' for Yokohama municipal junior high schools starting April 2026.
The introduction of four connected units of our unique continuous superheated steam oven 'SV Roaster' and the first deployment of a newly developed specialized school lunch container washing machine simultaneously achieves highly efficient mass cooking, advanced hygiene management, and labor savings.
Background
In Yokohama City, 'universal school lunches' began for municipal junior high schools in April 2026.
To implement universal school lunches, an operator was publicly selected to manage a base responsible for stably supplying a massive 30,000 meals per day for 56 schools across 7 wards: Kanazawa, Isogo, Naka, Minami, Konan, Sakae, and Totsuka.
This center requires mass cooking within a limited time, addressing severe labor shortages, and strict hygiene management.
Yokohama Junior High School Lunch Center Exterior
Key Introduced Technologies and Equipment Features
SV Roaster
This is Nakanishi Mfg. Co., Ltd.'s unique continuous superheated steam oven.
It completes 'baking/steaming/boiling' in a single unit, suppressing food oxidation in an ultra-low oxygen environment of less than 0.1% oxygen concentration, while retaining flavor and moisture.
In this facility, four units of this machine are connected to construct a highly efficient production line.
Four Connected SV Roasters
Specialized School Lunch Container Washing Machine
This equipment is a newly developed and first-introduced washing machine designed to quickly and cleanly wash the enormous number of school lunch containers used daily. It is linked with an automated washing line utilizing robots, achieving labor savings and high operational efficiency.
It simultaneously addresses labor shortages and ensures thorough hygiene management at HACCP-compliant levels, eliminating human error.
Specialized School Lunch Container Washing Machine
Future Outlook
As a company supporting 'food infrastructure,' Nakanishi Mfg. Co., Ltd. will continue to propose optimal kitchen solutions using the latest technology not only for school lunches but also for hospitals, welfare facilities, and the restaurant industry.
We will contribute to creating an environment where safe and secure meals can be provided through automation and labor-saving technologies, addressing the social challenge of increasingly severe labor shortages.
About Nakanishi Mfg. Co., Ltd.
Founded as a sole proprietorship in 1946 with the aim of selling aluminum tableware for school lunches. Later developed dishwashers and incorporated in 1958. Since then, the company has specialized in flexible proposals for systematizing complex kitchen equipment, primarily for school lunches. It also supplies kitchen equipment to various restaurant chains, including McDonald's. Since April 2022, it has been listed on the 'Standard Market' of the Tokyo Stock Exchange.
Contact for this matter:
Nakanishi Mfg. Co., Ltd. Public Relations & Marketing Department
e-mail: gr-kouhoumarketing@nakanishi-mfg.com
Official HP: https://www.nakanishi.co.jp
NAKANISHI Mirai Sozoshitsu: https://www.nakanishi.co.jp/mirai/
The introduction of four connected units of our unique continuous superheated steam oven 'SV Roaster' and the first deployment of a newly developed specialized school lunch container washing machine simultaneously achieves highly efficient mass cooking, advanced hygiene management, and labor savings.
Background
In Yokohama City, 'universal school lunches' began for municipal junior high schools in April 2026.
To implement universal school lunches, an operator was publicly selected to manage a base responsible for stably supplying a massive 30,000 meals per day for 56 schools across 7 wards: Kanazawa, Isogo, Naka, Minami, Konan, Sakae, and Totsuka.
This center requires mass cooking within a limited time, addressing severe labor shortages, and strict hygiene management.
Yokohama Junior High School Lunch Center Exterior
Key Introduced Technologies and Equipment Features
SV Roaster
This is Nakanishi Mfg. Co., Ltd.'s unique continuous superheated steam oven.
It completes 'baking/steaming/boiling' in a single unit, suppressing food oxidation in an ultra-low oxygen environment of less than 0.1% oxygen concentration, while retaining flavor and moisture.
In this facility, four units of this machine are connected to construct a highly efficient production line.
Four Connected SV Roasters
Specialized School Lunch Container Washing Machine
This equipment is a newly developed and first-introduced washing machine designed to quickly and cleanly wash the enormous number of school lunch containers used daily. It is linked with an automated washing line utilizing robots, achieving labor savings and high operational efficiency.
It simultaneously addresses labor shortages and ensures thorough hygiene management at HACCP-compliant levels, eliminating human error.
Specialized School Lunch Container Washing Machine
Future Outlook
As a company supporting 'food infrastructure,' Nakanishi Mfg. Co., Ltd. will continue to propose optimal kitchen solutions using the latest technology not only for school lunches but also for hospitals, welfare facilities, and the restaurant industry.
We will contribute to creating an environment where safe and secure meals can be provided through automation and labor-saving technologies, addressing the social challenge of increasingly severe labor shortages.
About Nakanishi Mfg. Co., Ltd.
Founded as a sole proprietorship in 1946 with the aim of selling aluminum tableware for school lunches. Later developed dishwashers and incorporated in 1958. Since then, the company has specialized in flexible proposals for systematizing complex kitchen equipment, primarily for school lunches. It also supplies kitchen equipment to various restaurant chains, including McDonald's. Since April 2022, it has been listed on the 'Standard Market' of the Tokyo Stock Exchange.
Contact for this matter:
Nakanishi Mfg. Co., Ltd. Public Relations & Marketing Department
e-mail: gr-kouhoumarketing@nakanishi-mfg.com
Official HP: https://www.nakanishi.co.jp
NAKANISHI Mirai Sozoshitsu: https://www.nakanishi.co.jp/mirai/