For the macaroni
01 -
8 oz (225 g) elbow macaroni
02 -
1 tablespoon kosher salt, for the pasta water
03 -
1 tablespoon apple cider vinegar
04 -
1 medium carrot, finely grated
05 -
2 tablespoons finely grated yellow onion, including juices
For the dressing
06 -
1 1/4 cups (300 g) mayonnaise
07 -
3 tablespoons whole milk, plus more as needed
08 -
1 teaspoon granulated sugar
09 -
3/4 teaspoon kosher salt, plus more to taste
10 -
1/2 teaspoon freshly ground black pepper
11 -
2 scallions, thinly sliced, optional