Place the shrimp in a medium-sized bowl with the baking soda. Toss to coat the shrimp. Transfer the shrimp to the refrigerator and let sit for 30 minutes. This will give the shrimp a pleasant “springy” texture.
Pour the water and sake into a saucepan. Add the remaining ingredients and place the saucepan over high heat. Bring the mixture to a boil, then reduce to a simmer. Simmer for 20 minutes.
Add the shrimp to the simmering poaching liquid and poach over low heat until the shrimp turns coral. About 2-3 minutes.
Transfer the shrimp to a plastic bag and dunk it into an ice bath to stop the cooking process.
Place the shrimp in a bowl and place them in the fridge to cool completely.
For the Dressing
Place all of the ingredients in a small bowl and whisk to combine. Chill in the fridge until ready to use.
For the Salad
Cook the soba noodles according to the package’s direction. Drain the cooked noodles and rinse them under cold water. Use your finger to delicately tease the noodles apart. Transfer the noodles to a large bowl along with the spiralized cucumber.
Pour the dressing over top of the noodle/cucumber mix and toss to coat.
Top the noodles with the shrimp, the remaining fruit and veg, and the peanuts.