Step 1

Cook the macaroni according to the package directions. Drain and rinse under cold water until cool. Set aside.

Step 2

Whisk together the mayonnaise, milk, vinegar, sugar, salt, and pepper in a large bowl. Add the macaroni, carrot, celery, green onions, and grated onion. Gently stir the mixture until well combined.

Step 3

Cover and refrigerate for 30 minutes. Gently stir, and top with more green onion, if you like.