Fingerling Potato Salad with Mustard Vinaigrette

I just started to get Cooking Light again and found this great recipe. Very easy to make but best at room temperature, even with the heat wave we have now. 

Ingredients

1/4 cup extra-virgin olive oil
3 tablespoons white wine vinegar
2 tablespoons grainy mustard
3/4 teaspoon freshly ground black pepper
1/4 teaspoon kosher salt
1 1/4 pounds multicolored fingerling potatoes, halved
1/2 cup thinly sliced red onion
2 tablespoons finely chopped fresh chives

Directions

Combine first 5 ingredients in a large bowl. Place potatoes in a medium saucepan. Cover with water by 3 inches; bring to a boil. Reduce heat to medium-low; cook 20 minutes or until potatoes are tender. Drain well. Add hot potatoes to dressing; toss gently to coat. Add onion and chives; toss.

From Cooking Light