When I worked at Louie’s Backyard in Key West, we served a similar noodle salad with peanut butter. It was quite spicy, but I prefer this milder preparation – Rick Anderson
Cook somen noodles in salted water and strain. Cut shiitake mushrooms into strips (remove stems). Saute in 2 tablespoons of oil for 1 minute. Mix remaining ingredients in large bowl with a whisk. Toss noodles and shiitakes with dressing and serve at room temperature.