Butter beer latte is tasty shit, I suggest a little more vanilla extract/essence and a few dashes of cinnamon. Use the mug that you will drink out of and fill it about 3/4 with milk, perhaps a little less. Heat gently while adding the ingredients after boiling and making the caramel. Boil quite a bit, for about 1/2 minutes, stirring while it boils then leave to boil without stirring for 2 minutes. Let rest for 5 minutes, make sure it’s not too hot, add some cold milk/water if it is. Enjoy tremendously!