Ingredients:

• 2 tablespoons cider vinegar
• 6 tablespoons olive oil
• 3 tablespoons strong prepared mustard
• 1 clove garlic, minced
• 6 anchovy fillets, mashed to a pulp
• 1/2 teaspoon salt
• 1 tablespoon finely chopped parsley
• 1 tablespoon finely chopped chives