This cool noodle salad has a spicy-hot zip from the chile paste in the mayonnaise. A similar spread is tucked into some varieties of sushi.
Cook soba in boiling water 2 minutes; add edamame. Bring to a boil; cook 2 minutes. Drain; rinse with cold water. Drain; cool. Place soba mixture in a bowl. Add cucumber and onions.
Combine mayonnaise and next 5 ingredients (through oil); stir with a whisk. Pour over the soba mixture; toss well. Top with bean sprouts.
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