Boil water.An electric kettle with a temperature setting is great for boiling water quick. Set the water temperature to 190°F. If you’re boiling water on the stovetop, turn off the heat as soon as it starts to simmer.
Steep tea for 5 minutes.Steep Earl Grey tea sachets in hot water for 5 minutes. Discard tea sachets.
MAKE WHIPPED CREAM
Whip together heavy cream and sweetened condensed milk.Combine heavy cream and 1 tablespoon of sweetened condensed milk in a tall container and whip until it doubles in volume using a handheld milk frother. Set aside.
Blend tea, ice, vanilla extract, and sweetened condensed milk until smooth.Use the blender tamper tool since it’ll make your frappuccino smoother.
Pour frozen London Fog into two cups.
Top with whipped cream.Serve with a straw and drink immediately.
Use filtered water if possible to make a better tasting tea.