MOS Day

What Is MOS Day?

March 12 is "MOS Day," established by Mos Food Services to commemorate March 12, 1972 (Showa 47), when the first experimental "MOS Burger" store opened in front of Narimasu Station on the Tobu Tojo Line. The day is a chance to remember the company's founding spirit and to express gratitude to the customers who have supported it ever since. Every year, the company hands out flower seeds as a token of thanks - a fitting tradition for a brand deeply rooted in community.

Made-in-Japan Dedication: Historical Facts

MOS Burger grew by thoroughly adapting to Japanese food culture and taste preferences.

• Pioneer of the Teriyaki Burger: In 1973, the company developed the "Teriyaki Burger," based on Japanese soy sauce and miso. MOS Burger was the first to roll out this now globally beloved item nationwide.
• The meaning behind "MOS": M stands for Mountain (noble and dignified, like a mountain), O for Ocean (a deep and generous heart, like the ocean), and S for Sun (a passion that never burns out, like the sun).
• Made-to-order cooking: MOS prioritizes taste over speed, sticking to an "after-order" system where food is prepared fresh upon order - a hallmark of the brand's reliability.

Interesting Facts About MOS Burger

• Inventor of the rice burger: In 1987, MOS launched the "Rice Burger," using grilled rice patties instead of buns - a genuinely groundbreaking product that made headlines as the world's first of its kind.
• The legendary first store: The Narimasu location started in a space of just about 9 square meters, yet it grew into a worldwide chain.
• The secret of the meat sauce: The signature MOS Burger uses a meat sauce made by slowly sautéing onions and simmering them with wine and spices - a recipe maintained to this day.
• Region-specific burgers: The company regularly releases limited-edition menu items featuring local specialties from across Japan, supporting regional agriculture and promoting local culture.
• A spirit of hospitality: Hand-written message boards in stores reflect a warm, human touch that has won over many loyal fans.

"Delicious" Connects Heart and Body

MOS Day is a day to appreciate the passion behind every burger and the smiles of the people who enjoy it. In an age that values efficiency, the value of things made with care and effort shines even brighter. On March 12, take your time enjoying your favorite menu item and savor the flavor of every ingredient. A satisfying meal generates new energy and a gentle boost for tomorrow.

Tips for Enjoying MOS Day

• Visit MOS Burger and enjoy a freshly made burger, appreciating the freshness of the ingredients and the care put into each one
• If you receive flower seeds, plant them and enjoy watching them sprout - a small daily joy of growth
• Take a moment to express gratitude to the people who support you with a kind word, fostering warm communication
• Following the spirit of "mountain, ocean, sun," reflect on your own goals and renew your passion and commitment

One Small Seed Can Blossom Into Joy

March 12 is a day when seeds of gratitude and effort you've planted quietly but surely begin to sprout. Just as MOS Burger grew from a tiny first step into a global brand, your own convictions have the power to move many hearts. May today be a day full of heartwarming encounters and the freshest, most flavorful experiences!