Cook the macaroni according to package directions until tender.

Drain and rinse with cold water to stop the cooking process.

Let it cool completely before proceeding.

In a small bowl, mix mayonnaise, sugar, pickle juice, milk, and mustard.

Season with salt and pepper, tasting and adjusting as needed.

Make sure the dressing is pourable, adding more milk if necessary.

In a large bowl, combine the cooled macaroni, celery, carrot, and onion.

Add about three-fourths of the prepared dressing.

Mix gently until all ingredients are well coated.

Add the remaining dressing as needed to achieve your desired consistency.

Taste and adjust the seasonings if necessary.

Chill the salad in the fridge for at least an hour before serving.

Give the salad a final stir before serving to keep it fresh and well-mixed.

You can garnish with herbs if you like an extra touch of freshness!