Start by preparing the sauce. Combine minced garlic, sugar, fine gochugaru, dashida, mirin, soy sauce and fish sauce. Mix until thoroughly combined then set aside for later.
Wash and peel the radish. Slice into 1-inch disks then cut in half. You can cut them in half or use cookie cutters to mold them into uniformly sized disks like I did.
Transfer the radish into a pan, making sure they are arranged in one layer.
Pour in the water and add the sauce from earlier. Cover and simmer for 20 minutes over medium-low heat.
After 20 minutes, flip the radishes then add the white part of the scallions, sliced peppers, and sesame oil. Cover and simmer for 15 minutes or until the braising liquid has thickened up.
To serve, garnish with sesame seeds and green part of the scallions. Enjoy!