The Perfect Japanese Chicken and Egg Rice Bowl

Name: Japanese Salad Chicken and Egg Bowl
Yield: 0
Cuisine: japanese
Ingredients: 1 cooked chicken breast (steamed); ¼ onions, shredded; 1 tsp sugar; 2 tbsp Mentsuyu (Japanese noodle soup base); 2 tsp sake; ½ cup water; ¼ bundle Mitsuba (wild Japanese parsley); 1 egg, beaten; 1 egg yolk; Dashi (Japanese soup stock), as needed; 200g rice