Potato Salad with Radishes Recipe

Ingredients

• 1.75 pounds Yukon Gold potatoes
• 1 white onion, chopped
• 2 bunches radishes, sliced
• 4 tablespoons red wine vinegar
• 1 teaspoon Dijon mustard
• salt and freshly ground black pepper
• 0.5 cup extra-virgin olive oil
• 2 tablespoons chopped fresh chives