Milk Frothers Compared

Milk foam comes in two broad textures. Microfoam is glossy and fine, with bubbles too small to see, and it blends into espresso for lattes and flat whites. Stiffer, drier foam sits on top of a drink in a thick cap, like a classic cappuccino or a cold foam. Different frothers are good at different textures, so the right choice depends on the drinks you make.

This guide compares the four common types of frother, explains which also heat milk, which milks foam best, and how to avoid the usual problems such as big bubbles, scalded milk and foam that collapses.

Steam wands

A steam wand on an espresso machine injects hot steam into milk. At first you keep the tip near the surface to draw in air, then lower it slightly so the milk spins and the bubbles break down into silky microfoam while the milk heats. With practice, a steam wand gives the most control over texture and is the tool for latte art.

It has a learning curve, and the result depends on the machine's steam power. Purge the wand before and after use and wipe it immediately, since milk dried onto a hot wand is hard to remove and harbors bacteria.

Electric jug frothers

These are small jugs with a magnetic whisk that spins in the base. Most have separate settings for hot foam, hot milk and cold foam. Press a button and they heat to a set temperature and stop on their own, which makes them reliable and easy.

The foam is usually a little bubblier than good steam-wand microfoam, but it is good enough for most home lattes and cappuccinos. Check capacity: many hold about 120 to 150 ml for foam and more for heated milk only. Choose one with a nonstick interior or a removable jug for easier washing.

• Hands-off, repeatable results
• Hot and cold foam settings
• Capacity is the main limit for larger drinks

Handheld battery wands

A handheld wand is a small spinning whisk on a stick. It aerates milk in seconds and costs very little. It does not heat, so you warm the milk first in a pan or microwave, or use it cold for iced drinks.

Keep the whisk just below the surface for a few seconds to add air, then lower it to blend the foam in. Use a tall, narrow container to avoid splashing. The foam is looser than other methods, and a weak battery gives weak foam, so replace or recharge regularly.

Manual pump frothers

A manual pump frother looks like a small French press with a fine mesh plunger. Pump it up and down in warm milk 15 to 30 times to build foam. Some can go on a stovetop or in a microwave to heat the milk first; check the material before doing this.

They need no power, are easy to clean and give surprisingly fine foam if you pump steadily. A regular French press can work the same way.

Which milks foam best

Milk proteins create foam and fat makes it richer. Whole dairy milk gives a creamy, stable microfoam; skim milk makes tall, stiff foam that tastes lighter and drier. Lactose-free milk usually behaves like regular milk.

Plant milks vary widely by brand. Barista versions of oat, soy and almond milk contain added fats and stabilizers that help them foam and resist splitting in coffee. Start with cold milk from the refrigerator for the best results with any frother.

Choosing a frother

If you have an espresso machine with a decent steam wand, learn to use it; nothing else matches it. Without one, an electric jug frother is the most convenient all-rounder. A handheld wand is fine for occasional drinks and cold foam, and a manual pump suits anyone who wants a simple, power-free tool.

Common questions

Why does my foam have big bubbles?

Usually too much air was added too fast, or the milk was not swirled afterward. Tap the jug on the counter to burst large bubbles and swirl the milk until it looks glossy. With a steam wand, keep the tip just below the surface instead of above it.

Can I froth milk cold?

Yes. Many electric frothers have a cold setting, and handheld wands and manual pumps work well with cold milk. Cold foam is used on iced drinks and cold brew. Lower-fat milk tends to make stiffer cold foam.

How hot should milk be for a latte?

Around 55 to 65°C (130 to 150°F) keeps the milk sweet and the foam stable. The jug should feel hot but comfortable to hold for a moment. Above about 70°C (158°F), milk can taste cooked and the foam starts to break down.