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!