Isaac Toast sauce becomes No. 1 duty-free bestseller at Incheon Airport

Sandwich chain Isaac Toast’s signature sauce has become the No. 1 best-seller at Airstar Duty Free at Incheon Airport.

The sauce had previously been the only food product to make the platform’s top eight alongside popular duty-free categories such as cosmetics and fashion. 

The Isaac Toast sauce is currently sold exclusively through Shinsegae Duty Free as a duty-free product and is unavailable through other sales channels.

The No. 1 ranking comes as the food company expands its promotional efforts overseas.

The company has introduced its products to consumers in Japan through events such as KCON, a global K-pop fan and artist festival. 

More recently, the toast company showcased its signature sauce and fruit jams at a pop-up store in Tokyo’s Omotesando and at a K-food promotional pavilion for the Asian Games Aichi-Nagoya 2026.

“We have steadily expanded opportunities to meet customers directly overseas, and after making the top eight, we have now reached No. 1 overall in the duty-free channel,” an Isaac Toast representative said. “We will continue to promote Isaac Toast’s products and brand through a range of global activities and expand opportunities to connect with customers overseas.”

Isaac Toast also donates 100 won (7 cents) from every bottle of sauce sold through its “Sauce with You” social contribution campaign to help provide meals for children experiencing food insecurity. 

BY SHIN HYE-YEON [[email protected]]