Set the mixer to low speed and slowly add the heavy cream until well incorporated. Add the green onion, dill, chives, lemon zest, lemon juice, salt and pepper(s). Whisk until the mixture thickens and firms.
1 cup heavy cream, 3 tablespoons minced green onions, 2 tablespoons minced fresh dill, 1 tablespoon minced fresh chives, 1 tablespoon lemon zest, 1 tablespoon freshly-squeezed lemon juice, 1 teaspoon fine sea salt, ½ teaspoon freshly ground black pepper, ⅛ teaspoon crushed red pepper flakes