Gemanys thanks giving side dish

Ingredients

• 2 pounds potatoes (preferably waxy, such as Red Bliss or Yukon Gold)
• 6 slices bacon (thick-cut)
• 1 medium onion (finely chopped, about 1 cup)
• 1 cup chicken broth (or vegetable broth for vegetarian variation)
• 1/4 cup apple cider vinegar
• 2 tablespoons Dijon mustard
• 1 tablespoon sugar
• Salt and freshly ground black pepper (to taste)
• 1/4 cup fresh parsley (chopped, for garnish)
• 1/2 cup green onions (sliced, for garnish, optional)