What temperature should milk be for a cappuccino?

Between 140 and 150°F. Hotter than about 160°F destroys both the sweetness and the foam structure.

Can you re-steam milk?

No. Once heated past roughly 160°F the proteins have denatured and the milk will only froth into large, unstable bubbles.

Why does my milk taste burnt?

It was taken too hot. Above about 160°F milk develops cooked, sulphurous notes that no amount of coffee underneath will hide.

Is plant milk steamed to the same temperature?

No — aim about 10°F cooler. Oat and almond milks scorch and thin out at temperatures dairy tolerates.

What Temperature Should Milk Be?

Updated July 28, 2026

Stop between 140 and 150°F. Below about 130°F the drink tastes flat and cools too fast; above about 160°F the proteins denature, the natural sweetness disappears and the texture collapses. Milk cannot be re-textured once scalded, so the ceiling matters more than the floor.

Why 150°F is the ceiling

Milk tastes sweet because heating converts some of its lactose and releases aromatic compounds. That process peaks around 140–150°F. Past roughly 160°F the whey proteins denature and start producing sulphur notes — the cooked, slightly eggy flavour of milk taken too hot.

The texture goes at the same point. Foam is stabilised by intact proteins; once they have denatured the bubbles collapse and the milk separates in the cup.

How to judge it without a thermometer

Hold the pitcher by the side rather than the handle. When it becomes uncomfortable to keep your hand there, you are at roughly 150°F. That is the whole technique, and most people calibrate to it within a week.

A cheap stick-on or clip thermometer removes the guesswork for the first fortnight. After that you will not need it.

Plant milks run cooler

Oat, almond and soy milks scorch at lower temperatures than dairy and turn thin and chalky. Aim for 130 to 140°F.

Barista-formulated versions tolerate more heat because of added protein and fat, but they still reward stopping earlier than you would with dairy.

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Frequently asked

What temperature should milk be for a cappuccino?: Between 140 and 150°F. Hotter than about 160°F destroys both the sweetness and the foam structure.
Can you re-steam milk?: No. Once heated past roughly 160°F the proteins have denatured and the milk will only froth into large, unstable bubbles.
Why does my milk taste burnt?: It was taken too hot. Above about 160°F milk develops cooked, sulphurous notes that no amount of coffee underneath will hide.
Is plant milk steamed to the same temperature?: No — aim about 10°F cooler. Oat and almond milks scorch and thin out at temperatures dairy tolerates.