Hot Tofu (Yudofu)

Name: Hot Tofu (Yudofu)
Prep time: 5 min
Cook time: 15 min
Total time: 20 min
Cuisine: Japanese
Ingredients: 1 medium tofu (momen tofu) ((14 oz, 397 g)); 1 ½-2 cups water ((add more if your pot is bigger)); mitsuba (Japanese parsley) ((or any green vegetable you like for color)); 1 piece kombu (dried kelp) ((2 inches, 5 cm)); 1 Tbsp sake; ¼ tsp kosher/sea salt (I use Diamond Crystal; use half for table salt); ¼ cup soy sauce ((4 Tbsp)); 1 Tbsp sake; 1 tsp mirin; ½ cup katsuobushi (dried bonito flakes) ((packed loosely)); green onion/scallion; grated ginger; shichimi togarashi (Japanese seven spice); yuzu kosho (Japanese citrus chili paste)