1.Pour milk into small or medium mason jar. Make sure you only fill half way. (You need the milk to have room to froth and puff up)2.Put the lid on the jar tightly and shake, shake, shake! (About 20 to 30 seconds should do.)3.TAKE OFF LID, don’t forget to do this step. Place opened jar in the microwave for 30 seconds. You have steamed frothy milk!