Add all ingredients to a cocktails shaker filled with ice. Shake until frothy.
Pour over more ice.
Garnish with orange of any kind.
Notes
Iced London Fog recipe here. If using Iced London Fog for a base, add 1-2 tsp. Earl Grey simple syrup. If using plain milk, add 3-4 tsp. Earl Grey simple syrup, to taste. For Really, Really Strong Earl Grey Simple Syrup, go here.