1

Place potatoes in large saucepan with cold water to cover by 1-inch. Bring to boil over high heat, add 1 tsp. salt, reduce heat to medium-low, and simmer until potatoes are tender, 10- to 15 minutes.

2

Drain potatoes thoroughly, then spread out on rimmed baking sheet. Mix 2 Tbs. pickle juice and mustard together in small bowl, drizzle pickle juice mixture over potatoes, and toss until evenly coated. Refrigerate until cooled, about 30 minutes.

3

Mix remaining Tbs. pickle juice, chopped pickles, remaining ½ tsp. salt, pepper, celery seed, mayo, sour cream, red onion and celery in a large bowl. Toss in cooled potatoes, cover, and refrigerate until well chilled, about 30 minutes. Gently stir in eggs, if using, just before serving.