Mos Burger Japan to Launch "Avocado & Shrimp Katsu Burger" for Early Summer Starting May 20

"Mos Burger" will once again launch its hugely popular shrimp menu — which sold more than 3.3 million servings last year — in a further evolved form this year. From Wednesday, May 20, the "Avocado Ebi Katsu Burger ～Domestic Basil Mayo～" will be available for a limited period, and the "'Mos no Takumi' Ebi Ebi Fry Burger ～Served with Wedge-Cut Lemon～" will be available in limited quantities. In addition, a refreshing new drink using domestic white peach sauce will also make its debut on the same day.

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■ "Avocado Ebi Katsu Burger ～Domestic Basil Mayo～" ¥590 【Sales Period: Wednesday, May 20, 2026 – Mid-July】

A colorful burger featuring a crispy-fried shrimp katsu made with generous amounts of shelled shrimp, topped with tomato and diced avocado, and drizzled with basil mayo sauce made from domestic basil. With every bite, the plump texture and flavor of shrimp, creamy avocado, and the refreshing taste of basil mayo spread throughout. This year, avocado — especially popular among women — has been added to the well-received basil × shrimp katsu combination from last year, making it even more evolved. A burger perfectly suited to early summer.


■ "'Mos no Takumi' Ebi Ebi Fry Burger ～Served with Wedge-Cut Lemon～" ¥780 【Sales Period: Wednesday, May 20, 2026 – Mid-July / Limited Quantity · Available While Supplies Last】

A premium burger with tremendous impact, featuring two large-sized fried vannamei shrimp — upsized from last year. With a commitment to handwork including deveining and making cuts for even cooking, the shrimp fry is fried crispy in two types of breadcrumbs of different coarseness, paired with a katsu sauce and a dill-fragrant tartar sauce. This year, a new addition of "wedge-cut lemon" hand-cut in-store is served alongside. Squeezing the lemon partway through adds a refreshing brightness to the rich tartar flavor, allowing you to enjoy a distinctly different eating experience.

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New drinks perfect for summer also arrive on the same day!

■ "White Peach Soda with Domestic White Peach & Lemon Sauce" S: ¥290 / M: ¥360 / L: ¥430 【Sales Period: Wednesday, May 20, 2026 – Early September】

A refreshing drink made by diluting a sauce using domestic white peach purée and fruit flesh with soda. The addition of Setouchi-grown lemon juice and minced lemon gives it not only sweetness but also a crisp, sharp finish. The beautiful gradient created by the white peach sauce and carbonation is visually cool and refreshing.

■ "A Whole Lemon's Worth! White Peach Soda with Domestic White Peach & Lemon Sauce" ¥590 【Sales Period: Wednesday, May 20, 2026 – Early September】

A treat-yourself drink with white peach soda topped with a whole lemon's worth of wedge-cut lemon. You can crush the fresh lemon and adjust the sourness to your liking, allowing you to enjoy an even more refreshing taste.

■ "Tea Milk ～Using Candy Tea Leaves～" M Size: ¥420 【Sales Period: Wednesday, May 20, 2026 – Early November】

A beautiful two-layered drink combining an original tea syrup extracted from the candy tea leaves used in Mos Burger stores with a generous amount of milk. With a fragrant aroma and a clean aftertaste, it is recommended both as a pairing with a hamburger and as an afternoon café-time drink.

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Enjoy early summer at Mos to the fullest with a luxurious shrimp-packed burger and refreshing drinks.

Sales Stores	Mos Burger nationwide (excluding some stores)
Sales Period	From Wednesday, May 20, 2026 (varies by product)
Official Site	https://www.mos.jp/

Information current as of May 12, 2026. Updated May 12, 2026.