Whisk together the dressing ingredients and set aside. If the dressing is too thick for your taste, stir in 1 tablespoon of warm water at a time until the desired consistency is reached.
For optional salmon, set oven to 400F. Brush the fillets with oil and sprinkle them with sesame seeds, salt and pepper. Bake for 10-12 minutes, until the internal temperature reaches between 125-135F. Remove and let cool while prepping the remaining ingredients, then add to the salad at the end.
Combine the lettuce, coleslaw mix, green onions and cilantro in a large salad mixing bowl.
Bring ¼ cup water to a boil in a small saucepan. Add frozen mukimame and return to a boil. reduce heat to medium then cover and boil gently for 4-5 minutes or until tender, stirring once. Rinse under cold water; drain well. Add to the salad bowl.
If making rice noodles, bring 4 cups of water to a boil in a medium saucepan. Add noodles; cook 4-5 minutes until they're tender but firm. Rinse under cold water; drain well. Using a scissors, cut the noodles into smaller, bite-sized pieces. Add to the salad bowl.
Toss all ingredients then top with dressing.