Coffee Soda: How to Make Sparkling Coffee Drinks at Home

If you want something cold and bright that still tastes like real coffee, coffee soda is the answer. Learning how to make coffee soda at home takes about two minutes: pour a strong, chilled coffee concentrate over ice, add a little syrup if you like, then top it slowly with very cold sparkling water. The bubbles lift the aroma, thin the body and make the coffee taste lighter and juicier than plain iced coffee.

The catch is that coffee and carbonation can fight each other. Warm coffee kills the fizz, the wrong order makes the glass foam over, and weak coffee turns into brown seltzer. This guide fixes all three.

Key takeaways

• Use a concentrate (cold brew or double-strength coffee) so the sparkling water does not dilute the flavor into nothing.
• Everything must be cold: coffee, glass, ice and sparkling water. Cold liquids hold carbon dioxide better.
• Coffee first, bubbles last, poured down the side of the glass.
• Start at 1 part concentrate to 2 parts sparkling water and adjust.

In this article

1. What coffee soda is (and isn't)
2. How to make coffee soda at home
3. Six coffee soda recipes
4. Troubleshooting flat, foamy or bitter glasses
5. Which coffee works best
6. FAQ

What coffee soda is (and isn't)

Coffee soda is simply coffee plus carbonated water, usually lightly sweetened. It is not a new trend. In Brooklyn, the Manhattan Special company has been making a bottled espresso coffee soda since 1895, from espresso, seltzer and sugar, and it is still sold today. Italian-American delis in New York kept it alive for generations.

Two close cousins already have their own guides on this blog. An espresso tonic uses bitter, quinine-flavored tonic water and a fresh shot poured on top. Coffee lemonade leans on citrus. Coffee soda is the plain, flexible base: neutral sparkling water, coffee and whatever flavor you add yourself.

How to make coffee soda at home: the base method

This makes one tall glass. Scale it freely.

1. Chill everything. Put the glass in the freezer for 10 minutes and keep the sparkling water in the coldest part of the fridge until the last second.
2. Build the coffee layer. Fill the glass with ice, add the syrup, then the concentrate. Stir now, while there are no bubbles to knock out.
3. Add the bubbles last. Tilt the glass and pour the sparkling water slowly down the side, the way you would pour a beer. Coffee contains oils and dissolved solids that give gas bubbles somewhere to form, so a fast pour straight onto coffee foams up and loses fizz.
4. Do not stir hard. One gentle lift with a spoon from the bottom is enough to mix. Serve right away.

How strong should the coffee be?

Sparkling water dilutes, so start with something stronger than you would drink on its own. If you make cold brew, brew it as a concentrate (roughly 1 part coarse coffee to 4 or 5 parts water by weight, steeped 12 to 18 hours in the fridge). Our cold brew guide and coffee concentrate recipe cover the steeping in detail. If you are in a hurry, brew hot coffee at double strength (about 2 tablespoons of ground coffee per 3 fl oz of water) and chill it fully in the fridge before using it.

Ratio cheat sheet

Six coffee soda recipes

Each uses the base method above. Quantities are for one glass.

1. Brooklyn-style sweet coffee soda

3 fl oz (90 ml) concentrate, 1 tbsp (15 ml) simple syrup, 6 fl oz (180 ml) seltzer. The closest home version of the old deli bottle: sweet, roasty and very cold.

2. Vanilla cream coffee soda

Base recipe with 2 tsp (10 ml) vanilla syrup, then float 1 tbsp (15 ml) of half-and-half or oat creamer on top. Pour the cream last and let it drift down for a soda fountain look. For dairy-free, use a barista oat or coconut creamer.

3. Orange zest coffee soda

Rub a strip of orange peel around the rim, drop it in, and use 2 tsp (10 ml) simple syrup. The citrus oil plays well with fruity, washed African coffees.

4. Cherry coffee soda

Muddle 4 or 5 pitted cherries (fresh or frozen) with 1 tsp (5 ml) syrup in the glass before adding ice. Use a chocolatey coffee so it tastes like a cherry cordial.

5. Ginger coffee soda

Swap half of the sparkling water for a dry ginger ale and skip the syrup. Ginger ale is already sweet, so taste before adding anything.

6. Maple and cinnamon coffee soda

Stir 2 tsp (10 ml) maple syrup and a pinch of ground cinnamon into the concentrate before the ice goes in, then top with soda water. Cinnamon does not dissolve, so mix it into the coffee first.

Lighter options

Coffee soda is naturally low in calories when unsweetened, because plain sparkling water and black coffee contribute almost none. To cut sugar, use a flavored coffee instead of syrup: the aroma reads as sweet even when the glass is not.

Troubleshooting flat, foamy or bitter glasses

Can I carbonate coffee in a soda machine?

Most home carbonation machines are designed for plain water only, and manufacturers generally warn against carbonating anything else because it can foam out of the bottle and damage the machine or void the warranty. Carbonate the water, then add it to the coffee. Check your own machine’s manual before experimenting.

Which coffee works best for coffee soda

Bubbles exaggerate whatever is already in the cup. A bright, fruity coffee turns sparkling and juicy; a dark, chocolatey one turns into something closer to a cola. Both work, they just make different drinks.

• Easiest start: our Cold Brew Coffee is a dark French roast already ground very coarse for cold brew, with a smooth, low-acid, naturally sweet profile that makes a forgiving concentrate.
• For a fruit-forward soda: Ethiopia Natural from Sidama is a sun-dried heirloom coffee with milk chocolate, ripe fruit and caramel notes, lovely in the orange or cherry versions.
• For a citrus kick: Kenya Nyeri brings bright acidity and orange, lemon and floral notes. Pair it with the orange zest recipe and go light on syrup.
• To skip syrup: browse our flavored coffees and cold brew them for a sweet-smelling soda without added sugar.

Every bag is roasted 1–5 days before delivery and arrives in 2–5 days, which matters here: fresh coffee gives a cleaner, more aromatic concentrate.

Coffee soda FAQ

Is coffee soda the same as an espresso tonic?

No. An espresso tonic uses tonic water, which is bitter and sweetened, and usually a hot shot poured over it. Coffee soda uses neutral sparkling water, so you control the sweetness and flavor.

Can I use regular iced coffee?

Yes, but only if it is brewed strong. Ordinary-strength coffee topped with soda tastes thin. Use a 1 : 1 ratio if your coffee is not a concentrate.

How much caffeine is in a glass?

It depends entirely on how much coffee you use. Three ounces of cold brew concentrate can hold as much caffeine as a full mug of drip coffee, so treat it like one. Our article on cold brew caffeine explains why the range is so wide.

Can I make coffee soda ahead for a party?

Make the concentrate and syrup ahead, but add the sparkling water glass by glass. Pre-mixed coffee soda loses its fizz quickly once opened.

Is there a decaf version?

Yes. Cold brew any decaf coffee as a concentrate and follow the same method. The taste is just as good with bubbles.

Sources

1. Manhattan Special, Wikipedia, accessed 2026.
2. Manhattan Special espresso coffee soda, Atlas Obscura.
3. Taste: Manhattan Special espresso coffee soda, City Lore.

Facts checked in October 2026.

Keep reading: Espresso tonic · How to make cold brew · Coffee lemonade · Flavored coffees