Krim Asam dan Saus Bawang

Bahan-bahan (6 porsi)

• 1 ½ cups sour cream
• ½ cup mayonnaise
• 4 teaspoons dried minced onion
• 2 teaspoons onion powder
• 2 teaspoons Dijon mustard
• 1 teaspoon garlic powder
• 1 teaspoon salt
• ½ teaspoon pepper
• 4 tablespoons minced chives, (divided)