Café au Lait: French Coffee with Warm Milk

Café au lait is one of the plainest drinks in coffee and one of the most misunderstood outside France. The name is French for "coffee with milk." The recipe is exactly that: hot coffee and hot milk in equal parts, combined in a wide bowl, drunk at breakfast. There is no foam technique, no espresso machine, no latte art. It is brewed coffee with milk.

The confusion arises because a café au lait is not a latte, despite the similar name. The difference is the coffee base, and it matters.

What makes it different from a latte

The base coffee is everything. A latte is 1–2 shots of espresso (30–60 mL of concentrated coffee, extracted under pressure at ~9 bar) topped with steamed milk and a thin layer of microfoam. The espresso is small and intense; the milk is the dominant volume.

A café au lait is a full cup of brewed coffee — 120–240 mL from a drip machine or French press — combined with an equal volume of hot milk. The coffee is the dominant flavour because you have far more of it; the milk rounds and softens without overwhelming. No pressure extraction, no microfoam, no latte art.

The café con leche is the closest relative: equal parts espresso and hot milk, small volume, strong. The café au lait is its larger, milder, drip-coffee counterpart^[2].

The French tradition

In France, a café au lait is a morning drink. It is served in a bowl large enough to hold in both hands — a bol — and consumed alongside bread, butter, and jam. Dunking the bread into the bowl is entirely standard.

The French café tradition outside the home operates differently: in a French café, the morning espresso drink is a café crème (espresso with steamed cream or milk, similar to a cappuccino). A café au lait in a French café is specifically the bowl format with drip or filter coffee — you are more likely to see it at home or in a boulangerie than at a Parisian coffee bar. Outside France, the term is applied loosely to any coffee-and-milk combination^[3].

The New Orleans version

The most famous café au lait in North America is not French — it is the New Orleans version, made with chicory coffee instead of plain coffee.

What is chicory coffee? A blend of dark-roasted coffee and roasted chicory root (Cichorium intybus), typically in a ratio of 60–70% coffee to 30–40% chicory. Roasted chicory root is not coffee — it contains no caffeine, no coffee plant material — but when roasted dark and brewed, it produces a liquid with an earthy, slightly bitter, chocolatey-woody character that blends with coffee.

How it started: chicory was added to New Orleans coffee as an extender during periods of coffee scarcity, particularly the American Civil War (1861–1865) when Union naval blockades disrupted supply. The practice predates the Civil War — New Orleans's French colonial heritage brought chicory coffee from France, where it was already common — and the addition persisted long after rationing ended because locals developed a preference for it.

Café Du Monde: the French Quarter coffee stand that has operated since 1862, serving café au lait (chicory coffee + steamed milk, 1:1) and beignets continuously, including through the night. Their canned coffee-and-chicory blend is sold nationally and is the standard for the New Orleans style.

The New Orleans café au lait is notably less bitter than it sounds: the chicory's bitterness blends with the coffee character and the full-fat steamed milk softens it into something earthy and warming. See Chicory Coffee for more on chicory alone^[3].

How to make a café au lait

Standard (French style):

1. Brew 150–200 mL of strong drip or French press coffee. Use a slightly higher dose than usual — the milk will dilute the coffee, so start stronger.
2. While the coffee brews, heat 150–200 mL of whole milk to just below a simmer (~70–75 °C). Scalding is traditional (heating until small bubbles form around the edges); microfoaming with a steam wand works but isn't necessary.
3. Pour the hot coffee and hot milk simultaneously into a wide bowl or large mug — holding both in each hand and pouring together is the classic technique for achieving an even mix.
4. Serve immediately. No foam layer, no garnish.

New Orleans style: substitute chicory coffee (French Market or Café Du Monde brand blend, or your own mix of dark-roast coffee and roasted chicory) for the plain coffee. Keep the 1:1 ratio.

No French press or drip? An AeroPress pulled with a higher water-to-coffee ratio (around 1:15–16 versus the usual tighter brew) approximates the character. A moka pot produces coffee too concentrated and espresso-like for a traditional café au lait.

Ratio adjustments:

Caffeine

A café au lait has roughly the same caffeine as the brewed coffee it is made from — approximately 95–130 mg per 200 mL of drip coffee — since the milk adds no caffeine. By comparison, a latte using a double espresso has roughly 120–140 mg in a smaller, more concentrated base. Per serving, caffeine is similar; per sip, the latte is far more concentrated^[1].

Common misconceptions

• "A café au lait is a latte with a different name." Different base coffee entirely. Latte = espresso + steamed milk + microfoam. Café au lait = drip or French press + hot milk. The character, concentration, and technique differ.
• "New Orleans café au lait is just coffee with milk." The chicory addition is integral and produces a distinct flavour profile. Substituting plain coffee gives a different drink.
• "It should have foam like a cappuccino." A traditional café au lait uses scalded or steamed milk without a foam layer. Adding microfoam makes it a latte (with the wrong coffee base).
• "It's always served in a bowl." The bowl format is French tradition, particularly at home. Cafés and American interpretations often serve it in a large cup. The bowl is aesthetically significant but not definitionally required.

The honest summary

A café au lait is hot brewed coffee (drip or French press, not espresso) with an equal volume of hot milk — 1:1 — served in a wide bowl. The New Orleans version substitutes chicory coffee for plain coffee, giving an earthier, less caffeinated cup with a long association with the French Quarter. It is not a latte; the coffee base is the distinction, and it matters to flavour. At home, the recipe is two simultaneous pours: coffee in one hand, hot milk in the other, into a bowl large enough for both.