Promised Land CSA » Beet, potato and walnut salad

Ingredients

• 1 1/2 pounds medium golden beets, scrubbed
• 1 1/2 pounds fingerling or new potatoes, halved lengthwise
• 2 tablespoons extra-virgin olive oil
• Coarse salt and ground pepper
• 1/2 cup roughly chopped walnuts (optional)
• 1/4 cup finely chopped fresh chives
• 1 to 2 tablespoons red-wine vinegar