If you are a Japanese-Korean cook and know how to operate a restaurant or bakery, there are culinary opportunities in Korea: box lunches to take out, sushi, cakes, pastries, French, Chinese stir fries, etc.

Korea is a big market especially for processed (cookies, biscuits), frozen (ice cream), and ready to microwave (katsu, rice) type foods, and if you can maintain the cooking standards, there should be a lot of money to be earned.