Proteiner Proteiner Sinnonhyeon Station Branch is a health-focused restaurant in Gangnam, Seoul, near Sinnonhyeon Station. It serves low-aging-diet meals and salads, where you choose a meat such as salmon, chicken breast, or tenderloin, and the salad comes with rice, vegetables, and hummus. The menu is varied enough to keep up a diet, and the food is tasty and filling despite being healthy. The amount of vegetables is on the small side, which may disappoint people who eat mainly vegetables.