Steaming Milk for Lattes
Turning cold milk into velvety micro-foam is about listening to the sound of the steam wand as much as watching the movement of the liquid. When done correctly, the milk takes on a glossy sheen and a consistency similar to wet paint.
Cold milk is mandatory.
Start with a stainless steel pitcher that is cold to the touch and milk straight from the refrigerator to give yourself enough time to work the foam before the temperature peaks.
- espresso machine with steam wand
- stainless steel milk pitcher
- damp microfiber cloth
What goes in.
- 6 ozwhole milk
Managing the Vortex
Position the wand slightly off-center to create a swirling whirlpool; this motion breaks down large bubbles into fine micro-foam and ensures the temperature distributes evenly.
The method.
Purge the wand
Open the steam valve for two seconds into your cloth to clear out any residual condensation.
Introduce air
Place the steam wand tip just below the surface of the milk. Turn the steam on full power. You should hear a soft tearing or paper-ripping sound. Do this only until the pitcher feels slightly warm to your touch.
Submerge and swirl
Lower the wand tip about half an inch deeper into the milk. The ripping sound will stop, replaced by a low hum. Adjust the pitcher angle to maintain a strong, circular vortex.
Finish at heat
When the bottom of the pitcher becomes hot enough that you can no longer keep your hand against it, turn off the steam.
Clean and groom
Immediately wipe the wand with a damp cloth and purge it again. Tap the pitcher firmly on the counter once to collapse any remaining surface bubbles, then swirl the milk manually to maintain the gloss.
Other turns to take.
Oat Milk
Requires less initial air than dairy milk, as it creates bubbles more easily and can quickly become too airy if stretched for too long.
When it doesn't go to plan.
If your foam looks like thick soap suds, you introduced too much air at the start; start the vortex sooner.
A dull, thumping sound means the steam tip is too deep; raise it slightly until you hear the hum.
Always purge the wand before and after steaming to prevent milk from being pulled back into the internal lines.
The ones that keep coming up.
How do I know if the milk is too hot?
If you scald the milk, the proteins break down and you lose the sweet flavor. If you can't touch the side of the pitcher for more than a second, it is ready.
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