Mos Food Service in Japan is celebrating the 4th anniversary of its official online shop with a special campaign running from July 15 to August 31, 2026. As part of the celebration, they have launched a new item, the Mos Rice Burger Dry Curry, available from July 15, and will release Hokkaido Potato Fries on August 6.
The online shop campaign features exclusive discounts on popular rice burger sets, original embroidered merchandise, and special bags inspired by Mos Burger’s takeout packaging. This offers fans a unique way to enjoy and celebrate Mos Burger’s iconic menu items from home.
About Mos Food Service and the 4th Anniversary Campaign

Mos Food Service, known for its Mos Burger chain, has marked four years since launching its official online shop, Life with MOS. This e-commerce site offers a variety of food products, merchandise, and collaborations centered around Mos Burger’s popular menu. To thank customers, Mos is offering limited-time products, discounts, and free shipping promotions.


Highlights
- New Mos Rice Burger Dry Curry launches July 15, featuring mild spice and diced pork shoulder with pickled vegetables.
- Frozen Hokkaido Potato Fries with skin-on natural cut released August 6 for easy home preparation.
- Exclusive embroidered merchandise including cotton T-shirts (¥6,200), caps (¥4,500), socks (¥4,500), organic towel handkerchiefs (¥2,900), and kids T-shirts (¥4,500) available from late July.
- Special bags inspired by Mos Burger’s takeout packaging: clear bags (S ¥1,580, M ¥1,780), insulated bags (¥2,200), and zipper bags (¥850 for 5 pieces each of Mos Chicken and Potato designs).
- Discounted 4th anniversary lucky bags with sets of Mos Rice Burgers and pizzas at 20% off regular prices.
- Free shipping on orders over ¥4,980 from July 15 to July 28 within the same temperature category.




Menu and Product Details
| Item | Details |
|---|---|
| Name | Mos Rice Burger Dry Curry, Hokkaido Potato Fries, 4th Anniversary Merchandise and Lucky Bags |
| Menu / items | Mos Rice Burger Dry Curry; Hokkaido Potato Fries; Cotton T-shirts (¥6,200 each); Cap (¥4,500); Rib Socks (¥4,500); Organic Towel Handkerchief (¥2,900); Kids T-shirt (¥4,500); Clear Bag S (¥1,580), M (¥1,780); Insulated Bag (¥2,200); Zipper Bags Mos Chicken & Potato (¥850 each, 5 pieces per set); Lucky Bags with Mos Rice Burger sets and pizzas (¥3,760–¥5,360) |
| Location | Mos Official Online Shop, Japan |
| Address | 2-27-1 Kami-Osaki, Shinagawa-ku, Tokyo |
| Period | July 15, 2026 – August 31, 2026 |
| Release date | July 15, 2026 (Mos Rice Burger Dry Curry); August 6, 2026 (Hokkaido Potato Fries) |
| Price | Cotton T-shirts ¥6,200; Cap ¥4,500; Rib Socks ¥4,500; Organic Towel Handkerchief ¥2,900; Kids T-shirt ¥4,500; Clear Bag S ¥1,580, M ¥1,780; Insulated Bag ¥2,200; Zipper Bags ¥850; Lucky Bags ¥3,760–¥5,360 (all tax included) |