[Today's New Product] 4.5-Inch-Bun Big Burger Lands in Korea... McDonald's 'Big Arch'

Developed by McDonald's global team and well received in markets worldwide
Made a regular menu item in some countries
Features two all-beef patties and three slices of white cheddar cheese

McDonald's Korea said on October 19 that it will launch Big Arch, a large burger developed by McDonald's global team and tested in markets around the world, on October 22.

Big Arch, which is making its debut in South Korea, features a 4.5-inch bun topped with sesame and chia seeds. It also comes with two 113-gram all-beef patties, three slices of white cheddar cheese, lettuce, pickle slices and fresh onion. The company said it added crispy onions, an ingredient being introduced by McDonald's Korea for the first time, to give the burger a crunchy texture.

Big Arch, a large burger that McDonald's Korea will launch in the country on the 22nd. Photo courtesy of McDonald's.

The burger is finished with Signature Big Arch Sauce, developed exclusively for Big Arch. The sauce is a key element that brings the patties, cheese and various toppings together.

Big Arch was first tested in Portugal, Germany and Canada in 2024, before its rollout expanded to several global markets. In France, it became McDonald's top-selling large burger after its launch in 2025. In the United Kingdom and Ireland, it was added to the regular menu in 2026 following a positive response to its limited-time release. Some recipes are adjusted slightly from country to country.

A McDonald's representative said, "We are delighted to bring Big Arch, which has been well received in major global markets, to customers in South Korea. We hope customers will enjoy a different kind of burger experience from our existing menu with Big Arch, McDonald's new icon."

This content was produced with the assistance of AI translation services.