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Home » General » How To Steam Milk – Frothing Milk for Espresso Drinks

How To Steam Milk – Frothing Milk for Espresso Drinks

March 7, 2011 by Daniel Harrington Leave a Comment

Learn How To Froth Milk – Steaming Milk for Espresso Coffee Drinks

The process of steaming and aerating milk, also known as frothing the milk, is a key component in creating a specialty coffee drink (espresso-based drinks) such as a Caffe Latte, Caffe Mocha, or Cappuccino.

The goal of a barista, when steaming and frothing milk is to create a very creamy and velvety texture that gives the drink a silky, smooth mouthfeel and creates a harmony of flavors.

The frothing process should also create a very high-quality foam that doesn’t just sit blandly atop the drink but instead is a pourable and shapeable foam that helps to create a harmony of flavors for the ultimate espresso drink.

The Process of Steaming and Frothing Milk for Espresso Drinks

The frothing process involves injecting air into the milk using the steam wand of an espresso machine. The goal is to create a very rich and creamy tasting milk and creating also a rich foam that is absent any large and tasteless bubbles.

Make Sure and Use Fresh, Cold Milk

The temperature of the milk you begin with should be very cold, just taken from the refrigerator. Fill the steaming pitcher about 1/3 full with the milk but no more because you will need room for the milk to froth properly and increase in volume, doubling or even tripling depending upon what type of milk you use and how you perform the aeration.

If you use a milk with a fair amount of fat like whole milk or cream it will create a richer texture, using a low fat milk will expand more in volume.

Purging the Espresso Machine in Preparation for Master Barista Steaming and Frothing

The next step in the steaming/aerating of the milk for your espresso drink is to prepare the espresso machine by purging the steam wand of any water that remain within it. Do this before you begin by placing a damp towel over the steam wand and turning on the steam briefly and letting it shoot into the towel.

How To Steam Milk – Frothing Milk for Espresso Drinks continued:

Submerge the Steaming Wand Just Slightly – Kiss the Surface

Okay, now you are ready to get started. Put the steam wand down into the milk just below the surface and not any deeper.

The goal is to find the perfect “sweet spot” where you can hold the steaming wand beneath the surface, just off-center, and it will start the milk flowing in a circular motion without you having to move the steaming pitcher at all.

Avoid Letting the Steam Wand Emerge Above the Surface – Tiny Bubbles

Don’t let the steaming wand emerge above the surface of the milk as this will create large, undesirable bubbles that have no taste (and also risks splattering milk around). What you want is tiny bubbles so small you can barely see them, creating a rich and creamy texture.

Frothing Milk for Espresso Drinks – How To Steam Milk continued:

Steaming and Frothing Milk – The Circular Vortex

The vortex of movement of the milk should continue in a circular motion with any bubbles that form simply being pulled back down into the milk where they disappear.

You will know when you have found the sweet spot as the steaming wand will create a hissing sounds somewhat like something frying on a grill. When you have found this spot to hold the steam wand beneath the surface you should keep it there precisely as this will create the optimal injection of air into the milk.

Steaming and Aerating the Milk – Hold Steady as the Volume Expands

Once you have found the sweet spot you can just hold the steaming pitcher steady without any movement other than slowly and gradually moving it lower as the volume of the milk increases and thus the upper surface moves upward.

Keep the steaming pitcher at just the right angle with the tip of the steaming wand just off-center and slightly beneath the surface (e.g., kissing the surface) at the sweet spot for steaming and aerating the milk perfectly and allowing the volume of the milk to expand as the rolling motion of the milk continues.

How To Steam Milk for Espresso Drinks – Frothing Milk for Perfect Espresso Drinks continued:

Steaming and Frothing – Minor Adjustments Control Amount of Foam Created

Remember there should be no large bubbles, only very small and fine bubbles that will have a silky, creamy texture. When the process is almost complete you can adjust how much foam you want to create depending upon the particular type espresso coffee drink you are preparing.

For example, you will need very little foam for a caffe latte, but quite a bit for a cappuccino. To create more foam keep the steaming wand near the surface just a bit longer and watch as the foam is created. The foam should have a very rich texture, and not be dry like a merengue.

Creating a Harmony of Flavors in Your Espresso Drink

Rather than simply sit lifeless atop the espresso drink, the foam should blend harmoniously with the drink and help to create a harmony of flavors that blend seamlessly and are a treat for the palate.

The foam should be of such a texture that it may be poured and shaped – that’s how you know you have fine foam.

How To Steam Milk – Frothing Milk for Espresso Drinks:

Gauge the Temperature – Don’t Scald the Milk for your Espresso Drink

Keep an eye on the rising temperature of the steaming milk and halt the steaming and aerating process once the milk reaches a temperature of 145 degrees Fahrenheit. If the temperature of the milk increases above this level it can scald and burn the milk, tainting the taste of the espresso coffee drink.

Fine Tuning the Frothing and Steaming

When you have finished the steaming and foaming process check to see if there are any large, undesirable bubbles sitting atop the mixture, and if so, try tapping the steaming pitcher down on a hard countertop a few times to make the bubbles disappear.

Cleanliness is Next to Godliness

At the conclusion of the steaming and aerating process make sure to take a moment to purge the steaming wand of any remaining milk by placing a wet towel over the end and turning it on again for a moment. Then wipe the steaming wand off thoroughly.

Learning How To Steam Milk – Skills for Frothing Milk for Perfect Espresso Drinks

Exploring the World of Gourmet Coffee

Learn about appreciating subtle coffee flavors and the primary characteristics of gourmet coffee including body, aroma, acidity, bitterness, sweetness, and aftertaste.

Master Barista Training Guide

Learn about master barista espresso brewing including very detailed instructions and tips on how to Pull A Perfect Espresso Shot.

Also check out the How to make a Latte which includes all the popular Espresso Drink Recipes and many more!


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