Brown Butter Latte Recipe (With Homemade Brown Butter Syrup)

Brown butter has been a quiet star of French cooking for centuries, and it is now one of the hottest flavors in coffee. A dairy flavor house even named it the top dairy flavor trend to watch for 2025, and seasonal brown butter lattes have gone viral on social media. The good news: you can make a better one at home. How to make a brown butter latte comes down to one skill, browning butter until it smells like toasted hazelnuts, and one recipe, a brown butter syrup you stir into espresso and steamed milk.

Below you will find the syrup, the latte, an iced version that does not leave greasy flecks, and fixes for the most common mistakes.

In this article

1. What is brown butter?
2. Brown butter syrup
3. How to make a brown butter latte
4. Iced brown butter latte without separation
5. Variations
6. Troubleshooting
7. FAQ

What is brown butter?

Brown butter, called beurre noisette in French (literally “hazelnut butter”), is butter cooked gently until its water evaporates and its milk solids toast to a golden brown. Those browned solids are where the flavor lives: nutty, toffee-like and deeply savory-sweet. It is the same family of browning reactions that gives roasted coffee and toast their flavor, which is why brown butter and coffee get along so well. Our article on the Maillard reaction in coffee roasting explains the chemistry.

A brown butter latte is different from butter coffee. Butter coffee blends plain butter into black coffee for richness; a brown butter latte uses browned butter mainly for flavor, sweetened and balanced with milk. If you are curious about the other style, see our guide to bulletproof coffee.

Step 1: Brown butter syrup

Makes about ¾ cup (180 ml), enough for 6–8 lattes.

1. Use a light-colored pan. Stainless steel lets you see the color change; dark nonstick pans hide it.
2. Melt the butter over medium-low heat. It will foam and sputter as the water cooks off.
3. Swirl and watch. After 3–5 minutes the foam settles, the milk solids at the bottom turn golden, then light brown, and the kitchen smells of toasted nuts. Take it off the heat immediately. The line between brown and burnt is about 30 seconds.
4. Add sugar and water carefully (it will bubble up), return to low heat and stir until the sugar dissolves, about 2 minutes.
5. Finish with vanilla and salt. Keep the brown bits: they carry most of the flavor.
6. Store in a jar in the fridge for up to about a week. The butter will firm up on top; warm the jar in hot water and shake before using.

For the basics behind all homemade syrups, see our guide to homemade coffee syrups.

Step 2: How to make a brown butter latte

Ingredients (1 latte, about 12 oz / 350 ml)

• 2 shots espresso, about 2 oz (60 ml), or ½ cup (120 ml) strong coffee
• 1½–2 tbsp (22–30 ml) warm brown butter syrup, shaken
• 8 oz (240 ml) whole milk or oat milk
• Optional: a pinch of flaky salt or cinnamon on top

Method

1. Pull the shots into your mug, or brew strong coffee in a moka pot or AeroPress.
2. Whisk in the syrup while the coffee is hot. Hot espresso and a quick whisk help the butter disperse rather than float.
3. Steam or froth the milk to about 140–150°F (60–65°C). A handheld frother or a shaken jar works if you have no steam wand.
4. Pour the milk into the coffee; the milk proteins help emulsify the butter for a silky texture.
5. Finish with a tiny pinch of flaky salt, which makes the toffee notes sing.

Iced brown butter latte without separation

Butter solidifies when it hits ice, which can leave little flecks floating on top. Three ways to avoid it:

• Blend it: blend hot espresso, syrup and 2 tbsp milk for 10 seconds before pouring over ice. The emulsion holds much better.
• Shake it: shake the espresso and syrup hard with ice in a jar, like a caffè shakerato, then top with cold milk.
• Strain it: for a cleaner iced syrup, chill the finished syrup, lift off the solid butter layer, and use the flavorful liquid underneath. You lose some richness but keep the toasted flavor.

Variations

• Brown butter maple latte: swap half the brown sugar for maple syrup.
• Brown butter pecan latte: toast a handful of chopped pecans in the butter as it browns, then strain them out.
• Brown butter cinnamon latte: add a cinnamon stick to the syrup as it simmers.
• Dairy-free: brown a plant-based butter that contains solids (check the label; pure oils will not brown) and use oat milk. The flavor is milder but still nutty.
• Lighter: use 1 tbsp syrup and boost flavor with a coffee that already carries buttery notes.

Troubleshooting

Best coffee for a brown butter latte

Brown butter loves coffees with caramel, nut and chocolate notes. Our Pecan Pie coffee is a natural match: its flavor profile is roasted pecans, caramelized sugar and browned butter on single-origin specialty coffee. Caramel wraps a smooth medium roast in sweet, buttery flavor, so you can use less syrup. For an unflavored base, Brazil Santos brings cocoa and roasted nut notes with low acidity. Explore more in our flavored coffee collection.

Brown butter latte FAQ

What does a brown butter latte taste like?

Nutty, toasty and toffee-like, with a gentle savory edge and a rich, rounded mouthfeel. Think butterscotch with a hint of toasted hazelnut.

Can I put brown butter directly in coffee?

Yes, a teaspoon of browned butter whisked into hot coffee works, but without sugar and milk it tastes savory and can leave an oily layer. The syrup method is smoother.

Should I use salted or unsalted butter?

Unsalted, so you can control the salt. Add a pinch at the end; a little salt makes the toffee flavor stronger.

How long does brown butter syrup last?

Up to about a week in the fridge in a sealed jar. Warm and shake before each use.

Is brown butter the same as ghee?

Not quite. Ghee is clarified butter cooked until the solids brown and are then strained out. Brown butter keeps those browned solids, which is where most of the nutty flavor is.

Sources

1. Anna Kinder, “Brown Butter: A Melt-in-Your-Mouth Trend to Watch in 2025,” The Food Institute, 2024. foodinstitute.com

Facts checked in October 2026.

Keep reading: Homemade Coffee Syrups · The Maillard Reaction in Coffee · Flavored coffee