About Carbonation
Carbonated soft drinks began as naturally effervescent mineral waters
In the 18th century, beliveing it had healing properties, scientists like Joseph Priestley learned to artificially carbonate water, and pharmacies began selling it as a medicinal tonic for digestion and throat ailments. Pharmacists enhanced these drinks with herbs, botanicals, and flavor extracts, gradually transforming them from remedies into enjoyable refreshments. In 1886, John Stith Pemberton introduced Coca-Cola as a medicinal syrup mixed with carbonated water, marking a pivotal shift toward commercial soft drinks. Carbonation evolved from pharmacy-based medicine to a global beverage industry centered on refreshment
Carbonation in beverages is measured in volumes of C02, which refers to the number of liters of gas dissolved in one liter of liquid. Most sodas fall between 3.0 and 4.0 volumes, while energy drinks and fruit-flavored sodas tend to have lower levels.
The "Super Fizz" Category | 4.5 – 6.0+ Volumes
These have the most aggressive bubbles, often requiring special reinforced glass to prevent the bottles from exploding.
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Champagne (e.g., Moët & Chandon, Veuve Clicquot): 4.6 – 6.0 volumes
German Wheat Beers (e.g., Erdinger, Paulaner): ~5.0 volumes
Mumm Champagne: Up to 6.35 volumes
SodaStream (Highest Setting): Can reach up to 5.0 volumes
High Carbonation: Standard Sodas & Mixers | 3.5 – 4.0 Volumes
This is the "sweet spot" for most major global soft drinks.
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Sprite: 3.8 volumes
Coca-Cola / Pepsi: 3.5 – 3.8 volumes
7UP: 3.7 volumes
A&W / Barq’s Root Beer: 3.5 – 4.0 volumes
Perrier (Bottled): 3.53 volumes
Canada Dry / Schweppes (Ginger Ale/Tonic): 3.2 – 3.5 volumes
Dr Pepper: 3.4 – 3.6 volumes
Club Soda: 3.0 – 3.5 volumes
Medium Carbonation: Sparkling Waters & Energy Drinks | 2.5 – 3.2 Volumes
These have a noticeable "zip" but are less sharp than a standard cola.
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Mountain Dew: 3.2 volumes
Red Bull / Monster Energy: ~2.7 – 3.0 volumes
LaCroix / Topo Chico (Canned): 2.8 volumes
Spindrift: 2.8 volumes
S.Pellegrino: 2.68 volumes
Liquid Death (Sparkling): 2.55 volumes
Budweiser / Standard Lagers: 2.4 – 2.7 volumes
Low Carbonation: Fruit Sodas & Ales | 1.5 – 2.2 Volumes
These drinks are often described as "refreshing" or "soft" rather than "fizzy."
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Guinness (Draught): 2.2 volumes
Fanta (Orange/Fruit flavors): 1.8 volumes
British Cask Ales: 1.5 – 2.2 volumes
Cava (Brut Nature): ~1.53 volumes
Lab-made carbonated samples often won’t feel the same as drinks from a production line Lab carbonation is less controlled & changes quickly with handling especially temperature change
One way to get an accurate taste test is to bring ice-cold “reference” drinks that match the carbonation level you like, keep them in a cooler the entire time, and have the lab team keep both the references and new prototypes ice-cold before, during, and after carbonation and tasting. This lets the team compare side-by-side and adjust carbonation to match as closely as possible.
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Why Lab Carbonation Rarely Matches Production & How to Get Better Tasting Results
When you taste a carbonated drink that “just came out of the lab,” it’s easy to assume the carbonation level should feel as consistent as a product off a commercial line. In reality, lab-made carbonation is often less controlled, less repeatable, and more sensitive to handling than mass production carbonation.
That doesn’t mean lab samples are useless—far from it. It just means you need the right expectations and the right sampling practices so you can evaluate flavor accurately.
Below is a practical guide you can share with anyone tasting carbonated prototypes (and with lab teams making them).
Lab carbonation isn’t the same as production carbonation
In mass production, carbonation is typically dialed in using equipment designed for precision and repeatability, such as:
Controlled chilling systems that keep the beverage at a tight temperature range
Inline carbonation systems with stable pressure/flow
Tank carbonation with regulated pressure and contact time
Consistent packaging/filling systems (counter-pressure filling, controlled headspace, minimal foaming)
Quality checks and feedback loops to keep CO₂ levels steady run after run
A lab environment, by contrast, often involves small batches and tools/processes that are inherently more variable:
Manual carbonation methods (pressurized vessels, carbonation caps, small carbonation stones, shaker systems)
Small containers and inconsistent headspace from sample to sample
Short equilibration times (carbonation needs time to dissolve evenly)
More handling (moving samples, opening/closing, pouring multiple times)
Temperature swings as samples sit out during tasting
So even if the lab team “hits the same pressure,” the perceived carbonation can still differ due to temperature, package, headspace, and how the sample is handled.
The biggest reason carbonation is “off” in the lab: temperature
Carbonation stability is extremely temperature-sensitive.
Cold liquid holds dissolved CO₂ better than warm liquid.
As drinks warm up, CO₂ becomes less soluble and escapes faster—especially once the container is opened, poured, or agitated.That’s why a sample that tastes perfect right after carbonation can taste flat (or inconsistent) a short time later if it’s been sitting out—even if nothing “went wrong” with the recipe.
Why this matters for tasting
Carbonation doesn’t just add bubbles. It changes how the drink tastes:
It adds bite/tingle (trigeminal sensation)
It can increase perceived acidity (carbonic acid)
It can suppress or shift sweetness perception
It affects aroma release and how flavors “lift” off the palate
It changes mouthfeel and the “finish” of the drink
So if carbonation is significantly higher or lower than intended, you may not be tasting the formula accurately.
Best practice in a lab scenario: bring “reference” drinks and keep everything ice-cold
If you want the lab team to match the carbonation you like, the single most effective step is this:
Bring sample drinks that have the carbonation you want
Bring commercial products (or prior internal samples) that represent the carbonation level and mouthfeel you’re aiming for.
These are your reference standards.
When your new prototypes come out of the lab, give the reference samples to the lab team so they can:
Taste side-by-side
Use them as a sensory target
(Ideally) measure and match carbonation as closely as possible
The rule: references must be ice-cold and stay that way
To make this work, your references must be kept ice-cold from start to finish:
Before you arrive
Store the reference drinks in a refrigerator (not just “cool,” but truly cold)
Transport them in a cooler packed with ice or cold packs
Do not leave them in a warm car, even briefly
When you arrive
Ensure they are still ice-cold
Keep them in the cooler until the moment they’re needed
Make sure the lab staff agrees to store them cold (fridge or ice bath)
During experimentation and tasting
The lab team should also keep all test samples ice-cold:
before carbonation
during carbonation
during any waiting/equilibration time
during tasting
after tasting (if samples will be re-checked)
If your references get warm, or if the prototypes warm up during sampling, your comparison becomes unreliable.
How to run a cleaner carbonation tasting in the lab
Here are practical steps that dramatically improve accuracy:
1) Standardize tasting temperature
Pick a tasting temperature (commonly “ice-cold”) and stick to it for:
reference drinks
prototypes
glassware (even warm glass can accelerate CO₂ loss)
Use an ice bath on the bench if needed.
2) Minimize time open to air
Carbonated samples change fast once opened. For side-by-side comparisons:
Open reference and prototype close together in time
Pour immediately
Taste promptly (don’t let one sit while another is discussed)
3) Pour gently and consistently
Foam and aggressive pouring drive CO₂ out.
Use the same pour height, angle, and speed each time
Avoid stirring or swirling carbonated samples
4) Allow carbonation to equilibrate
If a drink is carbonated and tasted immediately, the CO₂ may not be evenly dissolved yet.
Give newly carbonated samples time to stabilize while cold
Use the same wait time each round so comparisons are fair
5) Keep packaging and fill levels consistent
CO₂ behavior changes with:
bottle vs can vs lab bottle
different bottle sizes
different headspace volumes (how full the container is)
Whenever possible, standardize:
container type
fill volume
closure method
6) Document the “carbonation target”
Even if the lab can’t perfectly replicate production, you can still get much closer by documenting:
target sensory outcome (“crisp, high sparkle” vs “soft, lightly sparkling”)
reference product name
sample temperature during carbonation and tasting
pressure/time settings used
any observations about foaming or instability
This makes future rounds far more consistent.
The best place to truly dial in carbonation: pilot production
If the goal is to match what consumers will experience, the best practice is:
Go to the facility for pilot production and dial in carbonation there
A pilot line (or production-like setup) is where carbonation decisions become meaningful because it replicates:
production chiller performance
real carbonation equipment and controls
real filler behavior (counter-pressure, foam control)
real package formats and headspace
line speeds and handling conditions
In other words: pilot production is where carbonation becomes real.
Lab carbonation should still aim to get close—because you need accurate flavor feedback early—but the final “lock” is best done in pilot.
What to tell the lab team (a simple script)
Here’s a straightforward way to communicate expectations and process:
“Lab carbonation won’t be as controlled as production, so we’re bringing reference drinks that represent the carbonation we want.”
“These reference samples must stay ice-cold in coolers and remain ice-cold in the lab at all times.”
“Please keep all prototypes ice-cold before, during, and after carbonation and during tasting.”
“When the prototypes are ready, we’ll taste side-by-side with the reference and adjust carbonation to match as closely as possible.”
“If anything warms up, the tasting won’t be accurate, so temperature control is non-negotiable.”
Quick checklist for reliable lab carbonation tasting
✅ Bring reference drinks with your desired carbonation
✅ Keep references ice-cold in a cooler during transport
✅ Ensure lab staff stores references cold immediately upon arrival
✅ Keep prototypes ice-cold before/during/after carbonation
✅ Standardize tasting temperature, timing, and pour method
✅ Taste reference and prototype side-by-side quickly
✅ Dial in final carbonation at pilot production whenever possible
If you want, I can also rewrite this as:
a one-page SOP you can send to labs (with a checklist format), or
a short email/template for customers or stakeholders explaining why lab samples can taste “off” and how you’ll control it.Description text goes here