In a large pot over medium, cook the bacon, stirring often, until crisp, 6 to 7 minutes. Using a slotted spoon, transfer to a paper towel–lined plate; set aside.
To the fat in the pot, add the cabbage and cook over medium-high, stirring often, until softened and beginning to brown, 6 to 7 minutes.
Add the paprika and ½ teaspoon pepper; cook, stirring, until fragrant, 30 to 60 seconds. Add the broth and scrape up any browned bits, then add the potatoes and bay and bring to a simmer over medium-high. Cover, reduce to medium and simmer, stirring occasionally, until the potatoes are tender, about 15 minutes.
Off heat, remove and discard the bay. Stir in the vinegar and half of the parsley. Taste and season with salt and pepper. Serve sprinkled with the bacon and the remaining parsley.
