French Onion Dip Potato Salad

INGREDIENTS :

Kosher salt
2 pounds medium Yukon gold potatoes
1/2 medium English cucumber
2 medium stalks celery
1 cup sour cream
1/2 cup mayonnaise
1 (1-ounce) packet onion recipe soup and dip mix, such as Lipton Recipe Secrets
1/2 teaspoon freshly ground black pepper
3 hard-boiled large eggs (optional)
1/2 medium bunch chives

DIRECTIONS:

Bring a large pot of salted water to a boil over medium-high heat. Meanwhile, peel 2 pounds medium Yukon gold potatoes and cut into 1/4-inch thick rounds. Halve 1/2 medium English cucumber lengthwise, then thinly slice crosswise until you have about 1 cup. Thinly slice 2 medium celery stalks crosswise until you have about 1/2 cup.
Add the potatoes to the boiling water. Reduce the heat to maintain a simmer and cook until firm-tender, 8 to 10 minutes. Meanwhile, place 1 cup sour cream, 1/2 cup mayonnaise, 1 (1-ounce) packet onion recipe soup and dip mix, and 1/2 teaspoon black pepper in a large bowl and stir to combine. Add the cucumber and celery and stir to combine …