In a large bowl, thoroughly whisk the Eden Foods® Raw Ume Plum Vinegar (3 tablespoon), juice and zest of the Lime (1), Fresh Ginger (1 teaspoon), and Toasted Sesame Oil (1/4 cup).
Gently clean the Mushroom (3/4 cup) with a damp towel and tear or chip into bite-sized pieces.
Transfer the mushrooms to the bowl with the vinaigrette and stir to coat.
Clean and trim the Asparagus (0.5 pound) by removing the tough lower ends. Use a vegetable peeler to shave the asparagus into ribbons.
Add the asparagus to the mushrooms and vinaigrette. Toss to combine and allow to marinate while the noodles cook.
Bring a large pot of water to a boil. Cook the Eden Foods Buckwheat Soba Pasta (1 package) for 7-8 minutes. Drain and rinse with cold water.
Toss the noodles with the vegetables. Store up to two days in the fridge. Garnish with Black Sesame Seeds (to taste) and Avocado (1) if using. Serve at room temperature or chilled.