For the buttermilk dressing: In a large bowl, add the buttermilk, mayonnaise, sour cream, ketchup, vinegar, hot sauce, garlic and some salt and pepper. Add the chives and parsley and whisk together. Adjust the consistency with more buttermilk or mayonnaise. Taste and adjust the seasoning. Refrigerate until using.
For the salad: To serve, place the iceberg wedges on individual plates. Drizzle 2 to 3 tablespoons of dressing over each. Top with the red onions, tomatoes and blue cheese. Place 3 whole bacon strips over each and garnish with the chives. Serve with extra dressing on the side.
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