Benno's Bacon Potato Salad
1 pound red potatoes, scrubbed and cut into q… 1 tablespoon Dijon mustard 1 teaspoon prepared horseradish 2 slices thick-cut bacon, cut into 1-inch squ… 2 stalks celery, diced 2 tablespoons juice from yellow pepper rings 4 cups water, or enough to cover Creole seasoning (such as Tony Chachere's®), … ¼ cup mild yellow pepper rings, drained ¼ teaspoon salt ½ cup mayonnaise ½ teaspoon lemon juice ½ yellow onion, diced