01 -
Bring a large pot of salted water to a boil. Add macaroni and cook until al dente, about 7–8 minutes. Drain thoroughly and allow to cool completely.
02 -
In a large mixing bowl, combine mayonnaise and sour cream. Whisk until smooth and fully blended.
03 -
Add diced onion, celery, bell pepper, and sweet pickle relish to the dressing. Stir to distribute the vegetables evenly.
04 -
Add the cooled macaroni to the bowl. Gently fold until the pasta is thoroughly coated and the ingredients are well combined.
05 -
Add vinegar, salt, and black pepper to taste. Mix again, ensuring the seasoning is evenly distributed throughout the salad.
06 -
Cover the bowl with cling film and refrigerate the salad for at least 1 hour to allow the flavors to meld. Serve chilled.