American-Style Potato Salad

Ingredients

• 2 pounds small ‘Yukon Gold’ potatoes, peeled
• 3 large eggs
• 1 tablespoon kosher or sea salt, divided
• 1/4 cup cider vinegar, divided
• 1/2 cup olive or vegetable oil
• 1/2 cup thinly sliced scallions
• 2 celery stalks, chopped fine
• 1/4 cup finely chopped sweet pickle
• 1/2 cup mayonnaise
• 1/2 cup chopped fresh parsley
• 1 teaspoon freshly ground black pepper