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How to Carbonate Beer?

Article Highlights

  • Carbonation is the process of adding dissolved CO2 gas into a liquid to give it bubbles and create fizziness or effervescence
  • Benefits of carbonated beer include enhanced aroma, improved drinkability, and enhanced mouthfeel
  • Necessary equipment for carbonating beer includes: a container, tightly sealed bottles, a liquid sugar source, a priming sugar calculator, and a potable water source with accurate temperatures
  • Step-by-step guides for natural and forced carbonation methods are available
  • Tips and tricks for obtaining the perfect carbonation level as well as common problems and solutions to consider can be discussed

Carbonation is an important part of many beer styles, adding life, flavor, and body to the brew. If you’re looking to carbonate your own beer at home, you’ve come to the right place!

In this post, we’ll explain what carbonation is, list its benefits, outline the necessary equipment for carbonating beer at home and provide step-by-step guides for both natural and forced carbonation methods.

We’ll also cover tips and tricks for achieving your desired level of carbonation as well as common problems and solutions to consider.

Finally, we’ll suggest a few creative ways to carbonate your beer beyond traditional methods. So uncap a bottle of your favorite beverage and let’s get started diving into the world of carbonation.

What is Carbonation?

Carbonation is the process of adding dissolved CO2 gas into a liquid to give it bubbles and create fizziness or effervescence. The level of carbon dioxide in a beer directly affects its flavor profile; too much will give it a harsh taste while too little can leave it tasting flat.

There are two main methods used to add CO2 into beer – natural carbonation or forced carbonation.

Benefits of Carbonated Beer

Carbonated beers have several advantages over non-carbonated ones:

  • Enhanced aroma due to the increased volatility of volatile compounds in the headspace
  • Improved drinkability due to increased thirst-quenching properties from the prickly sensation on the tongue
  • Enhanced mouthfeel from increased bubble sizes providing a creamy, foamy texture

The Necessary Equipment for Carbonating Beer

In order to properly carbonate your beer at home, you’ll need:

  • A container (such as a corny keg) or bottling bucket with a spigot or ball valve
  • Tightly sealed bottles that can take pressure up to 30 psi (Stronger bottles may be needed depending on which method you choose)
  • Liquid sugar source (dextrose/corn sugar/lactose)
  • Priming sugar calculator
  • Potable water source with accurate temperatures (recommended 65°F)

Optional equipment includes:

  • Refractometer for measuring gravity before and after the fermentation process
  • Pressure regulator for forced carbonation
  • Gas cylinder for forced CO2 injection Methylene chloride testing kit for checking whether your containers are suitable for pressure

Note: It’s important that all equipment is sanitized prior to use. This will ensure that only clean air & gas enter your brews during the process & prevent contamination from occurring.

Guide For Natural Carbonation

To naturally carbonate your bottle, you will need to create an incubator. Priming sugars will react with the yeast in the fermented wort and create new CO2, which will stay in the solution until it is opened and released as bubbles. To start this process:

  • Gently boil potable water and dissolve 3/4 cup of dextrose per 5 gallons of wort or beer. This will ensure that priming sugars are evenly distributed without over carbonating and causing explosions. Allow cooling before use.
  • Sanitize bottles using an iodophor sanitizer or another recommended no-rinse sanitizer. Fill the bottles leaving 1 inch of headspace, then cap it off with a capper tool to make sure there is a tight seal between the cap and bottle mouthpiece for storage.
  • Store bottles vertically in cold storage at a constant temperature for optimum yeast activity. The amount of time required for CO2 to reach desired levels in each bottle can range from 3 weeks up to 12 months depending on the style brewed and gravity left behind from fermentation – make sure to track this periodically.

Guide For Forced Carbonation

To force carbonate your beer, you need to inject pressurized air or gas containing a high amount of CO2 into the keg. Fill the keg leaving one inch of headspace before securely attaching the lid to the top and connecting a quick disconnect hose to its spigot valve located below.

Connect the other end to the secondary regulator attached directly to the handle, then connect a length of tubing back into the keg lid, making sure there are no leaks. Check pressure levels often and gradually increase them over the next few days or weeks depending on what style you’re aiming for.

When desired levels have been reached, store in a fridge/cold storage cellar at around 35 psi, and carbonation will continue until the opening day arrives when you can pour a pint or two of your newly carbonated beer!

 Tips and Tricks for Obtaining the Perfect Carbonation Level

Here are some tips and tricks you can use to obtain the perfect level of carbonation:

  • Make sure fermentation is complete before bottling/kegging. Use a refractometer or hydrometer to measure gravity.
  • Test with a few bottles first to check the carbonation level and make adjustments as needed.
  • Check the temperature of your beer regularly – cold temperatures will slow down carbonation while warmer temperatures will speed it up.
  • Keep track of the pressure on your keg and adjust as needed.
  • Measure CO2 volumes with a sachet indicator to gauge how much is in the beer

Common Problems and Solutions To Consider

Too much carbonation can give your beer an unpleasant taste, while not enough can leave it flat and tasteless. Here are some common problems you may experience when carbonating your brew, along with solutions to consider:

  • The explosion of bottles due to over-carbonation: Test a few bottles first using less priming sugar than recommended or decrease pressure on the keg prior to releasing gas if using the forced method.
  • Flat-tasting beer due to under carbonation: Increase priming sugar dosage accordingly based on previous batch results if the natural method is used, or increase pressure within the keg barrel by gently adding more gas each day until desired levels are reached if forced process employed here instead!
  • Foamy head that disappears quickly due to inadequate seals between cap/bottle mouthpiece: Re-tighten seal ensuring no air bubbles escape from the top when shaken vigorously between hands & test a few first til satisfied end results obtained here too!

Creative Ways To Carbonate Beer Beyond Traditional Methods

In addition to traditional methods, there are some creative ways you can carbonate your beer at home too! These include techniques such as nitrogen injection (similar to Guinness Stout) and kombucha infusion (using kombucha tea made with live cultures).

You can also create wild yeast sour beers by inoculating them with Brettanomyces organisms which will naturally produce CO2 during fermentation, giving your brew its own unique flavor & body profile!

Regardless of which method you choose, just make sure that all equipment is sanitized beforehand in order to prevent any contamination from occurring throughout the process itself so happy homebrewing everyone else enjoys responsibly as always….


Nothing beats a perfectly balanced cold glass of freshly poured frothy beer on those hot summer days! Now that you know how easy it is to carbonate your own creations at home, why not give it a try?

Start small with low-ABV beers so that you can practice achieving the optimal CO2 levels before tackling higher ABV brews that require more precision when it comes time for bottling/kegging them up properly without over-carbonating them either way once all is said and done here too now!

Enjoy responsibly everyone else cheers now!!

Author Image Fabian
I’m Fabian, homebrewer and beer taster. I’m also the editor of Beer100. I love travelling the world and trying out new handcraft beer and different beer styles. I’m not an expert in brewing beer, but I know a few things about beer, which I share on this blog. If you need help or have a question, please comment below.

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