Make the coffee in whatever way you like ... mine is just simple instant coffee
Fill the jar with your desirable amount of milk ...but it would be best to leave the jar half full
Heat the jar of milk in the microwave ... I usually set it to 50 seconds
Take the milk out of the microwave & wait 10 seconds ... erh ... because it is scorching hot
Screw the lid to the jar tightly ... really TIGHTLY
Shake the jar vigorously for 20 seconds ... you need to be careful in case you don't screw the lid tightly enough, hot milk will seep out!
Now you get some frothy hot milk
Pour the milk into your coffee and enjoy!