Several methods work, and all of them produce foam rather than microfoam.
The jar method
Pour warm milk into a jar no more than a third full, seal it, and shake hard for thirty to sixty seconds. Then microwave uncovered for thirty seconds — the heat stabilizes the foam.
Free, and surprisingly effective for a cappuccino.
A French press
Warm the milk, pour it into the press, and plunge rapidly twenty to thirty times. This is essentially what a manual plunger frother does, and it works well.
Rinse it thoroughly afterwards, or your next coffee will taste of milk.
A whisk
Warm the milk in a pan and whisk vigorously. Slower and messier, and the result is fine.
A handheld electric wand
Cheap and effective for foam. It adds air without heating, so warm the milk first.
The order matters in all cases
Heat, then foam. Foaming cold milk gives you foam that collapses the moment it meets hot coffee, and heating it hard afterwards collapses what you made. The jar method’s short uncovered burst in the microwave is the one exception: it sets the foam rather than boiling it.
Warm to about 60 °C (140 °F) — hot to the touch, not scalding — then aerate.
What none of them do
Microfoam. That needs a steam wand, which injects steam and spins the milk simultaneously. For a cappuccino topped with foam, none of that matters.
What people want to know
Which milk foams best without a machine?
Whole milk gives the creamiest foam by hand, and skim milk the stiffest, longest-lasting one. Barista versions of oat milk foam far better than regular oat milk because they contain added fats and stabilizers.
Last reviewed 30 October 2026