Can You Make Coffee With Sparkling Water?

Quick answer

• Yes, you can technically brew coffee with sparkling water.
• It won’t taste great. The carbonation messes with extraction.
• Expect a flat, sour, or weak cup. Not ideal for your morning ritual.
• Stick to still, filtered water for the best flavor.
• If you have to try it, use less coffee and brew it quickly.
• It’s more of a science experiment than a delicious brew.

Who this is for

• The curious home brewer who wonders “what if?”
• Campers or travelers who might only have sparkling water available in a pinch.
• Anyone looking to understand how water impacts coffee flavor.

What to check first

Brewer type and filter type

Most brewers work with water, but the type of water matters. A pour-over with a paper filter will behave differently than a French press. Paper filters can absorb some of the weirdness, but it’s still not ideal.

Water quality and temperature

This is where things get dicey. Sparkling water is already treated and carbonated. Adding it to your brewer means you’re starting with something less than pure. Water temperature is crucial for extraction, and the dissolved CO2 in sparkling water can interfere with reaching the optimal temperature and holding it.

Grind size and coffee freshness

Fresh, properly ground coffee is key. If you’re already messing with the water, don’t compound the problem with stale beans or the wrong grind. A medium grind is usually a safe bet for most methods if you’re experimenting.

Coffee-to-water ratio

When experimenting with sparkling water, you might need to adjust your ratio. Start with less coffee than you normally would. Maybe try a 1:17 ratio instead of 1:16.

Cleanliness/descale status

Always make sure your brewer is clean. Old coffee oils will just add more funk to an already questionable brew. A clean machine is step one for any coffee, especially when you’re pushing the boundaries.

Step-by-step (brew workflow)

Let’s say you’re using a pour-over setup and you’re determined to try this.

1. Gather your gear: Brewer, filter, fresh coffee, sparkling water (room temp is best to start), scale, kettle.

2. Heat your water (separately): Do NOT heat the sparkling water in a kettle. Heat regular water to your desired brewing temp (around 200°F). You’ll use this after the initial pour.

3. Prepare the filter: Rinse your paper filter with hot still water to remove paper taste and preheat the brewer. Discard rinse water.

4. Add coffee: Weigh out your coffee grounds. Use less than usual, maybe 15-20 grams for a 10oz cup. A medium grind is a good starting point.

5. Bloom (carefully): Pour just enough sparkling water to saturate the grounds. About twice the weight of your coffee.

• What “good” looks like: The grounds should bubble and expand slightly. This is the initial release of CO2.
• Common mistake: Pouring too much water, or using hot sparkling water, which will make it go flat instantly and likely over-extract the bloom.

6. Wait for the bloom: Let it sit for 30 seconds.

• What “good” looks like: The bubbling should subside.
• Common mistake: Rushing this step. The bloom is important for even saturation.

7. Begin pouring: Start pouring the still hot water in slow, concentric circles. Aim for an even pour.

• What “good” looks like: A steady stream of coffee dripping into your carafe.
• Common mistake: Pouring too fast or all at once, which leads to channeling and uneven extraction.

8. Introduce sparkling water (optional, for a slight fizz): If you want to experiment further, after the initial pour and brew is mostly done, you could try a tiny splash of cold sparkling water into the brewed coffee.

• What “good” looks like: Maybe a very subtle, fleeting fizz.
• Common mistake: Adding too much, which will just ruin the coffee and make it taste weird.

9. Finish the brew: Let the water drain through. Total brew time should be around 2-3 minutes for a single cup.

10. Taste and assess: Swirl the coffee and take a sip. Note the flavor.

• What “good” looks like: Honestly, “good” might be a stretch here. You’re looking for a less offensive outcome.
• Common mistake: Expecting it to taste like normal coffee.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Using cold sparkling water	Under-extraction, leading to a weak, sour, and thin-bodied coffee.	Use room-temperature or slightly warmed sparkling water, but know it will go flat faster.
Using hot sparkling water	Rapid loss of carbonation, no real benefit, and can lead to aggressive degassing.	Heat regular water separately; only use sparkling water at room temp or cold for experimental purposes.
Not adjusting coffee-to-water ratio	Over-extraction due to the CO2 interference, making the coffee taste bitter/astringent.	Reduce the amount of coffee grounds used, or increase water slightly.
Using stale or improperly ground coffee	Exacerbates any off-flavors from the water, resulting in a truly unpleasant cup.	Always start with fresh, whole beans and grind them just before brewing.
Over-agitating the grounds	Can degas the water too quickly and disrupt extraction patterns.	Pour gently and avoid stirring unless your brewing method specifically calls for it.
Expecting great flavor	Disappointment. It’s a novelty, not a gourmet experience.	Adjust expectations; view it as a curiosity or a way to understand water’s impact.
Using flavored sparkling water	Will clash horribly with coffee flavors, creating a bizarre, medicinal taste.	Stick to plain, unflavored sparkling water if you’re going to experiment.
Brewing too long	The CO2 can interfere with proper extraction, leading to bitterness.	Aim for a faster brew time than usual, or at least don’t let it draw out excessively.

Decision rules (simple if/then)

• If your goal is a delicious cup of coffee, then do not use sparkling water because it will negatively impact flavor extraction.
• If you are stranded with only sparkling water available, then use less coffee and brew quickly because the carbonation will interfere with extraction.
• If you want to experiment, then use room-temperature sparkling water because hot water will make it go flat instantly.
• If you notice your coffee tastes sour, then you likely under-extracted, possibly due to the CO2 interfering with heat transfer.
• If your coffee tastes bitter, then you likely over-extracted, perhaps because the CO2 caused uneven saturation.
• If you are using a paper filter, then it might absorb some of the off-flavors, but don’t expect miracles.
• If you are using a metal filter (like a French press), then the impact of sparkling water will be more pronounced.
• If you want to understand water’s impact on coffee, then try brewing with different types of still water (tap, filtered, distilled) before experimenting with sparkling water.
• If you absolutely must try it, then consider a quick immersion method like an Aeropress with a short brew time to minimize negative effects.
• If you find the result undrinkable, then don’t feel bad; most people do.

FAQ

Can I use flavored sparkling water?

No, please don’t. Flavored sparkling water will clash with coffee flavors and create a truly unpleasant taste. Stick to plain if you’re going to experiment.

Will it taste fizzy?

Not really. The heat of brewing will degas the water very quickly, especially during the bloom. Any carbonation will be fleeting at best.

Is it safe to brew coffee with sparkling water?

Yes, it’s safe. There are no chemical reactions that make it dangerous. The main concern is flavor, not safety.

What happens to the coffee extraction?

The dissolved CO2 in sparkling water interferes with the heat transfer and solubility of coffee compounds. This often leads to uneven extraction, resulting in either sour (under-extracted) or bitter (over-extracted) flavors.

Can I use the CO2 from sparkling water to make better coffee?

No, the CO2 in typical sparkling water isn’t pressurized or controlled enough for brewing. Specialized carbonation systems are used in some advanced brewing methods, but that’s a different ballgame.

Should I heat the sparkling water?

It’s generally not recommended. Heating sparkling water makes it go flat very quickly and doesn’t offer any brewing benefits. It’s better to heat regular water separately.

What kind of coffee should I use?

If you’re experimenting, use a coffee you don’t mind wasting. A medium roast with a balanced profile might be the least offensive. Avoid delicate, light roasts that will be easily overpowered.

What if I only have sparkling water on a camping trip?

In a true emergency, you can try it. Use less coffee than normal and aim for a very quick brew time, perhaps a cowboy coffee style or a quick pour-over. Just manage your expectations.

What this page does NOT cover (and where to go next)

• Specific recipes for brewing with sparkling water (because there aren’t any good ones).
• Detailed chemical analysis of CO2’s impact on coffee extraction.
• Using specialized carbonation equipment for coffee brewing.

Next, you might want to explore:

• The impact of water minerality on coffee flavor.
• Different brewing methods and their ideal water temperatures.
• How to properly clean and descale your coffee maker.
• Tips for achieving the perfect grind size for various brewing methods.