I like to have a big bowl of 
this on hand for 'HOT' days (you know the kind-- hot and humid!) when I 
don't want to heat up the kitchen by cooking or baking-- boiling water included!   
Once you have the macaroni and 
sauce together (the first eight ingredients), 
you can add exactly what you like...
INGREDIENTS:
- 4 cups UNcooked elbow macaroni
 - 1 cup mayonnaise
 - 1/2 cup salad dressing (like Miracle Whip)
 - 1/4 cup distilled white or red vinegar
 - 2/3 cup white sugar
 - 2 and 1/2 tablespoons prepared yellow mustard (I sometimes use honey mustard).
 - 1 and 1/2 teaspoons salt
 - 1/2 teaspoon ground black pepper
 
Add what you like of the following:
- 1 medium onion, finely minced (or, some snipped/chopped chives?)
 - 2 stalks celery, chopped
 - 1 green bell pepper, seeded and chopped (sweet red pepper can be used, and adds color).
 - 1 cup of cubed ham
 - 1 cup of cubed cheese
 - 1 cucumber, seeded and cut into chunks
 - 4 radishes, thinly sliced
 - 1/4 cup grated carrot
 - 1/2 cup frozen petite peas, uncooked
 - Small cherry or grape tomatoes
 - 2 tablespoons chopped pimento peppers
 
DIRECTIONS:
- Bring a large pot of salted water to a boil.
 - Add the macaroni, and cook until tender, about 8 minutes.
 - Rinse under cold water and drain. Set aside.
 - In a large bowl, mix together the mayonnaise, salad dressing, vinegar, sugar, mustard, salt and pepper. Stir with a spatula/scraper until you can feel the sugar has dissolved or lost its graininess.
 - Stir in whatever else you like (see the list above). Mix well.
 - Add the cooked/cooled macaroni and gently mix until all is coated.
 - Cover and refrigerate for at least 4 hours before serving, but preferably overnight.
 
You can also make this salad have a very different taste by substituting the cubed ham with canned/drained tuna, bacon pieces, canned/drained white chicken chunks, imitation crab, or ???
