Fresh whole milk with 3.5% fat. The fat content provides a creamy texture, while the protein content (3.3–3.5%) stabilizes the foam. UHT milk works, but fresh milk froths better. Use directly from the fridge — cold milk is easier to control.

Which milk is best for cappuccino?

Fresh whole milk with 3.5% fat. The fat content provides a creamy texture, while the protein content (3.3–3.5%) stabilizes the foam. UHT milk works, but fresh milk froths better. Use directly from the fridge — cold milk is easier to control.

Why that is

Milk foam is created when air is worked into milk and stabilized by heat. Two components are crucial for this: protein and fat. Both influence how the foam forms, how it feels, and how long it lasts.

Protein (3.3–3.5%) is the main actor. When heated, the milk proteins (casein and whey protein) unfold and form a network around the air bubbles. This network stabilizes the foam — the more protein, the more stable. That’s why low-fat milk (1.5%) also froths, but the foam is less creamy and collapses faster.

Fat (3.5%) gives the foam its creaminess and mouthfeel. Fat additionally coats the air bubbles and provides a velvety texture. Low-fat milk produces dry, stiff foam — more “bubble bath” than microfoam. Whole milk yields the smooth, glossy microfoam you need for cappuccino and latte art.

Fresh milk vs. UHT milk: Fresh milk generally froths better because the proteins are more intact due to gentler pasteurization. UHT (ultra-high temperature) milk also works, but the foam is often coarser and less stable.

Temperature before frothing: Use milk directly from the fridge (4–6 °C). Cold milk gives you more working time — you can froth longer before reaching the critical limit of 65 °C. Warm milk reaches the limit too quickly, and the foam becomes coarse.

Low-fat milk (1.5%): Froths faster and produces more volume, but the foam is drier and less creamy. Suitable for a lighter cappuccino, but less so for latte art.

In practice at Green Wall Coffee

At Sophienstraße 27, we use fresh whole milk with 3.5% fat — and Oatly Barista as a plant-based alternative. Whole milk provides the best microfoam for our cappuccinos and flat whites. To guests frothing at home, I recommend: use whole milk, keep it cold, and don’t heat it above 65 °C.

Related questions

• Which milk is best for latte art?
• What is microfoam?
• What temperature should milk foam be?

Stop by Sophienstraße 27 — Mon–Fri 8am–5pm, Sat 10am–5pm.