Kamo nanban soba is a Japanese duck soba noodle soup recipe that combines tender duck, fragrant negi, and warm savory broth in one comforting bowl. The duck is usually seared first so the fat renders and adds rich flavor, then simmered briefly with dashi, soy sauce, mirin, and sake to create a deep but balanced soup base. Long green onion or negi is cooked until sweet and slightly charred, giving the broth a roasted aroma that pairs well with the duck. Soba noodles are cooked separately so they stay firm, then served in the hot broth with sliced duck and green onion on top. The final kamo nanban soba is rich, aromatic, and satisfying, making it a special Japanese-style noodle meal for lunch or dinner with clean umami, tender meat, and warm broth.