MOS Burger's Awaji Island New Onion Burger Returns for Spring 2026 in Kansai, Chugoku, and Shikoku
The seasonal "Awaji Island New Onion Burger - Japanese Soy Sauce Style" returns to MOS Burger locations in Kansai, Chugoku, and Shikoku from May 7 through mid-May 2026, featuring fresh spring onions grown by contracted farms on Awaji Island.