What you need:

• 2/3 cup nonfat plain Greek yogurt
• 1/3 cup low fat mayonnaise
• 1 tbsp taco seasoning
• 1 lime, juiced
• 1/4 cup chopped cilantro
• 2 tbsp chopped red onion (optional, to taste since it's raw)
• 1/4 cup salsa (or pico de gallo)
• 1 garlic clove
• 1/2 serrano pepper, seeded and diced (or jalapeno, more to taste)
• 1 tbsp olive oil