Preheat oven to 400°.Bring a pot of water to a boil. Quarter the potatoes and add to the water, cooking for 3-4 minutes. The potatoes should just be tender and have a good firmness to them. Drain and place in a roasting pan. Add the garlic and drizzle the potatoes with olive oil, salt, and pepper. Stir until the potatoes are well oiled and garlic is dispersed among the potatoes. Bake for 20-35 minutes until garlic is browning, stirring at least once halfway through.* Remove and let cool slightly.In a small bowl, whisk together the ingredients for the dressing. In a separate bowl, combine the spinach, sliced eggs, and roasted potatoes. Drizzle dressing over the salad and toss until the salad is coated with dressing.