Add the potatoes to a large pot and cover with cold water. Bring to a boil, then add 1 Tablespoon of kosher salt to the water. Cook, uncovered, until the potatoes are fork-tender, about 10 minutes. Drain and allow to cool.
3 pounds red potatoes
While the potatoes are cooling, prepare the dressing. In a small bowl, whisk sour cream, mayonnaise, Dijon mustard, vinegar, dill weed, salt, garlic powder, and pepper until smooth. Set aside or refrigerate until ready to use.
1 cup sour cream, ½ cup mayonnaise, 3 Tablespoons chopped fresh dill weed, 2 teaspoons Dijon mustard, 1 teaspoon white vinegar, 1 teaspoon kosher salt, ½ teaspoon garlic powder, ½ teaspoon ground black pepper
Add the cooled potatoes, eggs, celery, green onions, and dill pickle to a large mixing or serving bowl. Toss to combine.
4 large hard-boiled eggs, ⅔ cup chopped celery, ¼ cup sliced green onions, ¼ cup chopped dill pickle or dill pickle relish
Pour the dressing over the potato salad and toss to combine. Cover and refrigerate for at least 3 hours.