Combine 1 cup of Greek yogurt and 1 tablespoon of mayonnaise in a mixing bowl.
Add 4 minced cloves of garlic, 1 tablespoon of freshly squeezed lemon juice, 1 teaspoon of salt, 1/2 teaspoon of freshly ground black pepper, and 1/4 teaspoon of ground cumin to the bowl.
Whisk the ingredients together until smooth and well combined.
Taste your creation and adjust seasoning if necessary, and consider adding 1 tablespoon of olive oil.
Transfer the sauce to a serving bowl and refrigerate for at least 30 minutes before serving.