Cappuccino: What It Is, the Correct Ratio, and How to Make One at Home

A cappuccino is a 5 to 6 oz espresso drink built on equal thirds: one-third double espresso, one-third steamed milk, and one-third thick foam. It is smaller and more espresso-forward than a latte. The thick foam layer is what separates a cappuccino from every other milk-based espresso drink. Get the foam right and you have a proper cup.

This guide covers the ratio, dry vs wet versions, how it compares to a latte, and how to make one.

Cappuccino vs Other Espresso Drinks

The Ratio and What Each Layer Does

The Specialty Coffee Association defines a cappuccino as one-third espresso, one-third steamed milk, and one-third stiff foam in a 5 to 6 oz ceramic cup. A double shot of espresso , roughly 2 oz , forms the base. Two oz of steamed milk goes on top. Two oz of thick foam finishes the drink. The foam is not optional. Without thick foam, you have a latte. The foam holds heat, slows the temperature drop, and creates the texture contrast that makes it distinctive.

Dry means more foam and less steamed milk than the standard ratio. The drink is lighter, airier, and the espresso flavor comes through more strongly. Wet means more steamed milk and less foam. It is closer to a small latte in texture. Neither is wrong. Dry is the more traditional Italian preparation. Wet is more common in American specialty coffee shops where latte-style microfoam is the default texture.

Size: 5 to 6 oz. A latte is 8 to 12 oz. Foam: thick, stiff foam as a distinct layer. A latte has thin, integrated microfoam with no separate foam layer. Espresso ratio: about one-third by volume. A latte is one-quarter to one-fifth espresso. It tastes stronger and more espresso-forward. The latte is smoother and milk-forward. See our latte art guide for how microfoam differs from cappuccino foam.

You need an espresso machine with a steam wand. Pull a double shot into a preheated 6 oz cup. Steam 4 oz of whole milk: introduce air at the surface until the pitcher is hot to the touch, then hold the wand deeper to heat and integrate. Stop at 140 to 150 degrees. The foam should be thick and stiff, not pourable like latte microfoam. Spoon the foam onto the espresso rather than pouring it , or pour with a light wrist tilt to control how much foam vs steamed milk goes in first. See our espresso at home guide for how to pull a correct double shot.

Frequently Asked Questions

Size, foam, and espresso ratio. The smaller drink , 5 to 6 oz , has thick foam and a strong espresso presence. A latte is 8 to 12 oz with thin integrated microfoam and a milk-forward taste. For something smaller, stronger, and foamier, order one. If you want a larger, smoother, milk-forward drink, order a latte.

One double shot of espresso which delivers 60 to 80 mg of caffeine. The milk and foam contain no caffeine. A double-shot cappuccino has less caffeine than a large drip coffee (80 to 120 mg per 8 oz) but similar caffeine per ounce since it is much smaller.

Whole milk. The fat content creates thick, stable foam that holds its shape in the cup. 2% milk works but produces slightly less stable foam. Oat milk is the best non-dairy option for foam stability. Skim milk produces very stiff, dry foam that is hard to control. Whole milk gives you the most consistent cappuccino foam texture.

Medium to dark roast. The thick foam holds its own against a bold espresso. Dark roast produces rich crema and a strong flavor that cuts through the foam and milk. Medium roast works for a more complex, origin-forward cappuccino. Browse our premium coffee collection for all three roast levels. See our espresso blend guide for what makes a good cappuccino base.

Not a true one. You need an espresso machine for the double shot and a steam wand for the thick foam. A moka pot produces strong coffee but not espresso pressure or crema. A French press with frothed milk produces a milk coffee, not the real thing. For the home barista setup required, see our home barista guide.

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