Grilled German Potato Salad

Ingredients

• 2.5 pounds Yukon Gold potatoes
• 0.5 pound bacon, sliced
• 1 cup diced yellow onion
• 0.5 cup white wine vinegar
• 2 tablespoons white sugar
• 2 teaspoons kosher salt
• 1 teaspoon freshly ground black pepper
• 1 pinch cayenne pepper, or to taste
• 0.25 cup freshly chopped Italian parsley