Step 1: Prepare the Ingredients
Wash and dry the cilantro leaves. Peel and mince the garlic. Measure out all the ingredients so they’re ready for blending.

Step 2: Blend the Ingredients
In a blender or food processor, add the cilantro, garlic, mayonnaise, sour cream, lime juice, vinegar, salt, pepper, and sugar. Blend until smooth.

Step 3: Add the Olive Oil
While blending, slowly drizzle in the olive oil. This will help emulsify the sauce, giving it a smooth, creamy consistency.

Step 4: Taste and Adjust
Taste the sauce and adjust the seasonings as needed. Add more lime juice for extra tanginess or more garlic for a stronger flavor.

Step 5: Store and Chill
Transfer the sauce to an airtight container and refrigerate for at least 30 minutes before serving. This allows the flavors to meld together beautifully.