Cut bacon in 1-inch pieces; cook until lightly browned. Drain.
Cook potatoes in water to cover for 8-10 minutes, until fork tender. Drain.
Cook beans in 1/2-inch water, salted, 8-10 minutes. Drain.
Combine dressing ingredients, stir well.
Combine potatoes and beans.
Pour dressing over and add bacon. Toss gently.
Let sit 2-3 hours, covered. Stir gently and serve. Yield: 8-10 servings.