Grilled Lemon Potato Salad - Oryana

Ingredients

• 2 lbs small yukon gold or red potatoes, or larger and cut into 1/4s
• 1 large lemon, cut in half
• 1/2 cup olive oil
• 2 teaspoons grainy mustard
• 1/4 cup chopped fresh chives
• salt and pepper
• 2 tablespoons vidalia onion, diced small