What Is Microfoam?
Microfoam is steamed milk with thousands of tiny, uniform bubbles — so small they're invisible individually. It looks like glossy, wet paint and pours smoothly for latte art.
⚡ Quick Answer
Microfoam is steamed milk where the bubbles are so small they're imperceptible — the milk looks glossy and has the consistency of melted ice cream. You achieve it by aerating (introducing air at the surface) at the start of steaming, then submerging the tip to heat and integrate the bubbles. Bad microfoam = visible bubbles. Great microfoam = the milk looks like wet paint that flows and folds.
🎯 The Test: After steaming, tap the pitcher firmly on the counter and swirl. If you can see individual bubbles popping, not microfoam yet. If it looks like a uniform glossy liquid that swirls smoothly — that's microfoam.
⚙️ Microfoam vs Froth: What's the Difference?
Froth (what to avoid)
- • Visible, large bubbles
- • Sits on top of milk rather than integrating
- • Dry, airy texture (like shaving cream)
- • Pops quickly when poured
- • Can't pour latte art through it
- • Tastes less sweet than microfoam
Microfoam (what to aim for)
- • Bubbles too small to see individually
- • Fully integrated into the milk
- • Silky, glossy, pourable texture
- • Flows and folds when poured
- • Enables latte art patterns
- • Tastes sweeter due to heat-released lactose
✅ How to Achieve Microfoam
Aerate first: Keep steam tip just below the surface (2–3mm). You should hear a soft "ssss" tearing sound, not loud gurgling. Do this for the first 3–5 seconds while milk is coldest.
Submerge to heat: Angle pitcher and dip tip slightly deeper — off center to create a vortex that integrates bubbles as milk heats.
Stop at 60–65°C: Remove when pitcher is hot but still holdable. Tap on counter and swirl to integrate remaining bubbles. Pour within 30 seconds.