Melt the butter on low heat, preferably in a double boiler, or, paying close attention, stirring regularly in a pot. Stir in the flour, incorporating it into the butter thoroughly until smooth. Slowly add the milk, stirring constantly. Cook on low-medium heat, stirring regularly, until it reaches a silky, creamy consistency.
Whisk in the salt, paprika, garlic powder, onion powder, oregano, cayenne, nutmeg and cloves. Cook for 5 minutes.
Whisk in the vinegar, adding slowly. Cook for another 5 minutes, whisking often.