Prepare all of the ingredients. Start water boiling for potatoes.
In large pot over medium-high heat, add potatoes and chicken broth. Add water to make sure potatoes are submerged. Cook for 15 minutes. Drain in colander then return to pot away from heat.
In a frying pan over medium-high heat, add bacon. Cook until crispy and remove to paper towel covered plate. Reserve 2 tablespoons of bacon grease.
In a small bowl, combine garlic, bacon grease, vinegar, mustard, salt, pepper and parsley.
Add scallions, bacon and vinegar mixture to the potatoes. Toss to coat. Serve warm.