How to steam milk on the cheap for coffee or tea

Assemble supplies

Fill up your jar with some milk.

Shake it lightly to foam up the milk.

Let it sit for a moment or tap the jar lightly against the table or palm of your hand to get rid of the big bubbles.

Place into microwave.

Microwave on medium power for about 10 seconds; watch it carefully as the milk is going to double in volume.

Done! Serve on coffee.