Make creamy dill sauce by combining yogurt, mayo, garlic, onion, dill, black pepper, salt, dijon mustard, and vinegar. Adjust seasonings to taste.
⅓ cup avocado oil mayo, ⅓ cup plain yogurt, ¼ teaspoon garlic powder, ¼ teaspoon onion powder, ¼ teaspoon dried dill, ¼ teaspoon black pepper, ¼ teaspoon salt, ½ teaspoon vinegar, 4 teaspoon dijon mustard