Cold soba noodles make a great meal on their own, but adding some protein to the dish can help boost its nutritional value and add flavor. The best proteins to pair with cold soba noodles are grilled fish such as salmon or tuna, shrimp, tofu, tempura vegetables or eggs. If you're looking for vegetarian options, roasted edamame beans or mushrooms are also delicious additions. To jazz up the dish even more, try marinating your chosen protein in soy sauce, sesame oil and ginger before serving it alongside the chilled soba noodles. Enjoy!