Sweet-salty whipped foam is the whole point of my keto salted caramel dalgona coffee, inspired by Starbucks' cold brew with salted cream foam — just 1g net carbs. I tested three different milks to dial in the foam ratio.
I started making classic keto dalgona coffee back when everyone was whipping instant coffee during lockdown. It was good, but I kept thinking it needed something more. That's where the salted caramel version came from. Two tablespoons of sugar-free caramel syrup folded into the foam, a sprinkle of salt on top, and suddenly this went from a fun trend to something I actually crave.
The ratio matters more than people think. I tested different amounts and landed on 2.5 tablespoons of instant coffee to 2.5 tablespoons of powdered sweetener. Less than that and the foam won't hold its structure. You need those ribbons forming when you pull the whisk out. That's how you know it's ready. If you chill the mixing bowl before you start, the whole process goes faster. I picked that up after making this dozens of times and noticing the foam whips tighter in a cold bowl.
For the milk base, I've gone back and forth. Macadamia nut milk is my go-to for richness. It has this subtle creaminess that pairs with the caramel without competing. But I've also made it with coconut cream after one of my readers (Luz) mentioned she'd been doing it every morning. She was right. Coconut cream holds the layered effect longer than any other milk I've tried. The foam sits on top and each sip hits differently depending on how far down you are. If you go the coconut cream route, chill the glass first or the cream warms up and the layers collapse fast. Almond milk works too. The foam comes out a little lighter but it still does the job.
I make this as a low carb alternative to the Starbucks salted cream cold brew, and it honestly gets closer than I expected. The keto version has that same salty-sweet foam layer over cold milk, but you control the sweetness. No hidden sugars. If you're into coffeehouse drinks, this sits right alongside my keto caramel macchiato and keto cold brew coffee as a rotation favorite.
One thing I want to flag: add the caramel syrup right after whipping, while the foam is still fresh. If you wait too long, the syrup can cause the foam to deflate or get clumpy. Fold it in gently with a spoon, not the mixer. You can also try the keto mocha dalgona coffee if you want a chocolate twist on the same base.
This makes two servings, so it's already sized for sharing. I've scaled it up for a group by doubling everything and letting guests pour their own milk. The foam holds surprisingly well sitting in a bowl. James from the comments made a batch for brunch and two people asked if he'd ordered it.
Dalgona coffee is about 2/3 milk topped with 1/3 whipped coffee foam, finished with a sprinkle of salt.
Pick the Right Coffee and Sweetener
Check the label on your instant coffee. Skip anything with MCT oils or creamers. The fat makes the whip fall flat.
Use powdered sweetener, not granulated. It dissolves better, and it helps the foam stay stable, so don’t skip it.
Other Milks That Work
Heavy cream works too, or any unsweetened nut milk. Half and half is an option if you are not strict on carbs.
Other nut milks to try:
cashew milk
pili nut milk
hemp milk
The foam is ready when it looks this smooth and falls off the whisk in ribbons.
In a small bowl, add coffee, sweetener and hot water.
2
Whip the coffee
Using an electric mixer, mix until smooth, frothy and ribbons form at the top when pulling the whisk out of the mixture. You can whisk by hand too, but this will take around 10 minutes.
3
Add the caramel
Lightly mix in caramel syrup.
4
Pour nut milk
Pour 1 cup of cold or hot nut milk into a glass. Top with half of the Dalgona coffee foam and sprinkle with salt.
Nutrition
Per serving: 1 cup
Calories
80
Fat
5g
Protein
1g
Total carbs
16g
Net carbs
1g
Nutrition is an estimate calculated from the ingredients listed. Brands vary, so check labels if you track closely.
Frequently Asked Questions
Can I use ground coffee instead of instant coffee?
No, it has to be instant. I've had readers ask this and I tested it myself. Regular ground coffee won't whip. It just sinks to the bottom and you get gritty water. The 2.5 tablespoons of instant is specifically what produces that thick, ribbon-forming foam on top.
What is the best sugar-free caramel syrup brand to use?
I use Jordan's Skinny Syrups salted caramel. It folds into the foam cleanly without thinning it out and the flavor is strong enough that two tablespoons actually comes through. Torani sugar-free caramel works too, but I find it a little more artificial tasting in cold drinks.
How long does the foam hold up before it deflates?
In my experience, the foam stays stiff for a solid 15-20 minutes sitting on top of the milk. One of my readers made a batch for brunch and said it held the entire time his guests were pouring. The key is getting those stiff ribbons when you whip. If your foam is loose, whip it longer.
Can I make a hot version of this dalgona coffee?
I've done it both ways. Pour heated milk into the glass instead of cold, and spoon the foam on top. The foam melts into the hot milk faster so you get more of a blended drink than a layered one. I actually prefer the keto version hot on cold mornings. The salted caramel flavor comes through stronger when it's warm.
What happens if I wait too long to add the caramel syrup?
I learned this the hard way. If the foam sits for more than a couple of minutes before you fold in the caramel, it starts to set and the syrup clumps instead of incorporating smoothly. Fold it in right after whipping while the foam is still loose and glossy. Gentle spoon strokes, not the mixer.
Which milk makes the creamiest base?
I've tested macadamia, almond, and coconut cream. Macadamia nut milk is my favorite for everyday richness. But coconut cream holds the layered effect the longest, each sip tastes different depending on where you are in the glass. Almond milk works fine, just lighter. If you want something closer to a keto white mocha level of creaminess, go coconut cream.
Can I batch this for a group?
I've doubled and tripled the foam recipe for groups. Whip the full batch of foam in one bowl and let guests spoon it over their own milk. The foam holds well sitting in a bowl for at least 20 minutes. I pour the milk options into a pitcher and set everything out, almost like a coffee bar. Works great for brunch or a weekend morning with friends.
Can I make this recipe decaf?
I've made it with decaf instant coffee using the exact same 2.5 tablespoon ratio and the foam whips up identically. If you're looking for something warm and cozy without caffeine, my keto hot chocolate and keto frappuccino are also solid options.
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Hosting a little brunch for my sister and her kids next weekend and I really want to make these. Quick question on the whipped foam: can I make it the night before and keep it in the fridge, or does it deflate by morning? I’ve made regular dalgona a couple times and it always held up fine, but wasn’t sure if swapping to powdered monkfruit changes how it keeps overnight. Same question for the caramel syrup: does that go in before storing or just before serving? If the foam really needs to be fresh I can at least pre-measure the instant coffee and sweetener ahead of time so I’m not scrambling while hosting.
Rita, the foam overnight is the one I’d skip. Mine deflates after 20-30 minutes even just sitting in a bowl, and I haven’t tested fridge-overnight to know if the monkfruit holds differently than sugar would. What I’d do for brunch: pre-measure the coffee and sweetener the night before, then whip it fresh right before guests pour. Two minutes with a hand mixer. Caramel goes in immediately after you stop whipping, before the foam starts to set.
The daily request thing happens fast with this one. I fold the caramel in right after whipping, because if you wait even a few minutes the foam starts to set and it clumps. Don’t tell him how fast it comes together, Rachel.
The caramel folds in and the foam holds shape. I batch it Sunday night, keep it covered, scoop into cold macadamia milk each morning. One minute start to glass.
80 calories with actual caramel flavor was the thing I couldn’t find anywhere else. Most low-carb coffee drinks water the caramel way down to hit a macro, or it’s a separate drizzle gone after two sips. Syrup goes into the foam so the flavor’s in the coffee, not sitting on top. That’s the difference.
Caramel coffee drinks were the thing I quietly gave up on when I went keto. That sweet-salty finish in a cold coffee is weirdly specific and nothing I tried came close, so I stopped looking. Found this last weekend and made it twice before noon because I needed to confirm it was actually working. The caramel folded into the whipped foam with the salt on top is exactly the combination I couldn’t crack on my own. 80 calories and 1 net carb and I’m sitting here wondering why I spent two years ordering plain cold brew like some kind of martyr. Macadamia milk underneath is what makes it feel like a real drink, not just sweet air on top of milk. This is going to be a problem.
Two years of plain cold brew is a long time. The macadamia milk is what I kept coming back to in testing too, it carries the foam without turning everything milky. One thing: fold the caramel in right after you stop whipping. Even two minutes of sitting and it clumps instead of ribboning in clean. If you want the layered effect to hold even longer, coconut cream underneath is worth trying. Completely different sip depending on where you are in the glass.
Was not convinced the monkfruit would whip up properly, but it holds its peaks just as well as sugar. Better cold foam than anything I’ve made with heavy cream, and the macadamia milk keeps it light enough to actually drink without weighing you down on a 90-degree day.
It actually out-whips erythritol in foam, which surprised me the first time. And yeah, the macadamia milk was a big part of why this works on a hot day.
Used to get the salted cream cold brew from Starbucks every Saturday, my one treat. Gave it up when I went keto and honestly grieved it a little. The caramel foam over the macadamia milk in this brought me right back.
Grieving a Starbucks drink is a real thing. That salted cream cold brew was the whole inspiration, I wanted to nail that sweet-salty thing just right. Try an extra pinch of salt on top next time. Gets you even closer.
Used cold brew concentrate instead of the hot water and instant coffee, and the foam came out just as stiff with way more depth. I cut the sweetener to barely a tablespoon because between the concentrate and the caramel syrup, it really doesn’t need much. The thing I figured out: let the whipped foam sit 2-3 minutes before stirring it into the milk or it just sinks in one clump instead of spreading out.
Cold brew concentrate is actually a smarter base for this – more coffee depth without adding water to the foam structure. The 2-3 minute wait thing is real, I’ve had the same clumping happen when I rush it.
My boyfriend took one sip and immediately asked why we’re still paying for Starbucks when I can make this at home (valid, honestly). The foam is where it’s at, I kept sneaking spoonfuls before it even hit the macadamia milk, though I ended up doubling the salt sprinkle because I wanted that contrast a little louder.
Double salt is right, the recipe amount is conservative. I always go heavier when I want that contrast to actually punch through. And eating the foam before it hits the milk is basically step one at this point.
Tried this with canned coconut cream instead of macadamia milk and I’m not going back. The foam sits on top way more dramatically and the whole thing tastes like something from an actual coffee shop. I did add a tiny extra pinch of salt because the coconut cream mutes it a bit, but that’s a 5-second fix. Four stars for the original, probably five if you go the coconut cream route.
Having people over Saturday and want to prep these ahead. Can the whipped foam hold up if I make it a few hours early and refrigerate it, or will it lose texture by then?
The foam holds in a bowl in the fridge for a couple hours, I’ve done it for brunch. Just don’t spoon it over the milk until you’re ready to serve or it’ll start sinking. Let guests do it themselves at the table.
Made a batch for brunch last weekend and left it out for guests to pour themselves. Two people asked if I’d ordered it. Foam held up the whole time, which surprised me.
I’ve made dalgona coffee plenty of times and kept skipping the macadamia nut milk because I assumed it would taste thin and watery under all that foam. Not even close. The whipped layer holds up better than it does over heavy cream, and the caramel syrup pulls everything together into something that actually competes with the Starbucks salted cream cold brew it’s based on. Warm version is happening this weekend, I can already tell.
Macadamia holds the foam better than heavy cream does, I’ve tested both. For the warm version, the foam melts in faster. More like a blended coffee than a layered one. Still worth it.
Swapped the macadamia milk for coconut cream and the layers actually hold for a while before the foam starts sinking in. Each sip hits different depending on how far down you are, which I didn’t expect from a coffee drink. If you go this route, chill the glass first or the cream warms up fast and the whole thing collapses in like two minutes. Been making this every snow morning this month and I’m freaking obsessed.
Swapped macadamia nut milk for almond milk and it works fine, less rich but still does the job. Cold bowl before whipping cuts the time down a lot if you’re impatient like me.
Cold bowl trick works. Almond milk is fine, the foam just comes out a little lighter. Macadamia is my preference for the richness but it’s not a dealbreaker.
