To froth oat milk, use the steam wand on an espresso maker or use a u003ca href=u0022https://amzn.to/2YeDl7Ku0022 target=u0022_blanku0022 rel=u0022noreferrer noopener nofollowu0022u003ehand-held milk frotheru003c/au003e. To use a hand-held frother, place the oat milk in a mug and move the wand of the milk frother up and down. Leave the tip of the wand just below the surface of the milk to whip air into the milk. This can take 2 - 3 minutes until you get a thick and creamy consistency.