Combine lingonberry preserves, mustard and vinegar in a small bowl. Whisk thoroughly to combine.
Add olive oil in a slow, steady stream while continuously whisking the mixture. Season to taste with salt and pepper. Toss with salad greens and serve.
Calories: 91kcal | Carbohydrates: 2g | Protein: 1g | Fat: 9g | Saturated Fat: 1g | Sodium: 21mg | Fiber: 1g | Sugar: 2g | Vitamin C: 1mg | Iron: 1mg