I have been to Seoul for more than 10 times and I swear I have yet tried this local famous toast. While it has been known as one of the hottest street foods in Seoul, it is expanding successfully to Asia, the Isaac Toast in Macau, where is a more commercialized version.
Isaac Toast was first opened by an old lady who had to sell sandwiches to earn money when her husband was diagnosed with an illness. It started at one of the nearby universities, selling freshly grilled butter bread sandwiches with ingredients such as ham, cheese, beef patties, bacon and their very own secret sauce.
A smear of the sauce on the butter bread is just heavenly. Sweet as honey, mayonnaise consistency, this is why Isaac sandwiches are so spectacular. Make sure to grab one when you come to Korea!
The Making of Toast
Adding Cheese, Lettuce
Ham & Cheese
Apple & Mango Juice