In a medium mixing bowl, add sour cream, Dijon mustard, minced garlic, lemon zest, lemon juice, cilantro, parsley, green onions, kosher salt, black pepper, red pepper flakes, smoked paprika, and cayenne pepper. Mix to combine.
2 cups sour cream, 2 tablespoons Dijon mustard, 4 cloves garlic, 1 tablespoon lemon zest, 3 tablespoons lemon juice, 2 tablespoons fresh green onions, 2 tablespoons fresh cilantro, 2 tablespoons fresh parsley, 1 teaspoon kosher salt, ½ teaspoon red pepper flakes , ¼ teaspoon smoked paprika, ¼ teaspoon cayenne pepper , ¼ teaspoon black pepper