Korean Radish Kimchi (Kkakdugi)

Name: Korean Radish Kimchi (Kkakdugi)
Prep time: 1 h 15 min
Cook time: 5 min
Total time: 1 h 20 min
Cuisine: Korean
Ingredients: 1.1 kg Korean radish ((2.5 pounds), or daikon radish, rinsed and skin peeled); 3 stalks green onion ((50 g / 1.8 ounces), rinsed); 2 Tbsp raw sugar; 2 Tbsp rock salt (or Korean coarse salt); 1/2 small brown onion ((70 g / 2.5 ounces), skin peeled, cut into small pieces to blend); 1/2 small red apple ((50 g / 1.8 ounces), seed and core removed, cut into small pieces to blend); 3 Tbsp Korean fish sauce (, I used anchovy sauce); 1 Tbsp minced garlic; 1/2 Tbsp minced ginger; 4 Tbsp Korean chili flakes ((gochugaru)); 1/4 cup water; 1 Tbsp rice flour