In a bowl, add mayonnaise, pepper flakes, black pepper powder, onion and garlic powder, red chile powder, mixed herbs, salt, milk, and whisk to form a sauce of smooth consistency. Keep this aside. If your sauce remains too thick, you can thin it down with more milk.
¾ cup Mayonnaise, 1 teaspoon Red pepper flakes, ½ teaspoon Black pepper powder, 1 teaspoon Onion powder, 1 tablespoon Garlic powder, 1 teaspoon Red chile powder, 1 teaspoon Mixed herbs, ½ teaspoon Salt, ½ cup Milk