MOS Burger’s Autumn “Tsukimi” Shines Gold This Year
MOS Food Services, Inc. (headquarters: Shinagawa-ku, Tokyo; President: Eisuke Nakamura), operator of the MOS Burger chain, will release the new autumn seasonal item “Tsukimi Focaccia ~Golden Cheese Sauce~” for a limited time from Wednesday, September 9, 2026 through early November at MOS Burger locations nationwide (excluding some stores). The soft-boiled-style egg evokes the full moon, and this year it is paired with a rich cheese sauce inspired by a golden moon, marking the fifth year of the popular series.
An Autumn Staple With 14.1 Million Servings Sold
As a hamburger chain born in Japan, MOS Burger has long focused on seasonal product development. The Tsukimi Focaccia, inspired by Japan’s moon-viewing custom, debuted in 2022 and has since sold a cumulative 14.1 million servings, becoming a beloved fixture of the autumn menu. In its fifth year, the chain keeps the familiar appeal while completely renewing the sauce for a fresh taste experience.
What Is the “Golden Cheese Sauce”?
The newly developed golden cheese sauce blends Parmesan and cheddar cheeses for a rich, concentrated flavor. Egg yolk powder adds extra depth, while black pepper provides a sharp finishing accent. The creaminess of the cheese and the spice work in harmony with the smoky aroma of the horseshoe-shaped sausage, which releases juicy meat flavor with every bite.
Lineup and Pricing
Tsukimi Focaccia ~Golden Cheese Sauce~ (630 yen)
A juicy horseshoe-shaped sausage made with natural sheep casing is layered with half-calorie mayonnaise-type dressing, shredded cabbage, finely chopped onion, golden cheese sauce and a soft-boiled-style egg (an original processed egg product of the company), all sandwiched in fluffy focaccia. The chopped onion adds textural contrast so the flavor never grows tiresome, and breaking the egg releases a creamy yolk sauce for an even richer taste.
Golden Cheese Sauce Focaccia (560 yen)
An egg-free option that lets the sausage and cheese sauce shine. The crisp horseshoe-shaped sausage is topped with the rich golden cheese sauce and served in fluffy focaccia. The focaccia dough balances a clean bite with an airy texture, and shio-koji is added to keep it moist after baking.
Sales Overview
- Products and prices: Tsukimi Focaccia ~Golden Cheese Sauce~ 630 yen / Golden Cheese Sauce Focaccia 560 yen (both tax included)
- Sales period: Wednesday, September 9, 2026 – early November
- Stores: MOS Burger locations nationwide (excluding some stores)
Committed to “Deliciousness, Safety and Health”
MOS Food Services consistently develops products based on the philosophy of “deliciousness, safety and health,” delivered with “service from the heart, with a smile.” Through its after-order cooking approach maintained since founding and product development rooted in Japanese food culture, the company continues to pursue its mission of “making people around the world happy through food.” Be sure to try this golden take on the moon-viewing classic this autumn.