Bottling is one of the final and most satisfying stages of home brewing. Done properly, it gives you clear, carbonated beer that is ready to share, store or enjoy at home.

The key is patience. Your beer must finish fermenting before bottling, and every piece of equipment that touches the beer needs to be properly cleaned and sanitised.

What you need to bottle beer

Before starting, prepare:

• Clean beer bottles
• Crown caps or suitable swing-top bottles
• Bottle capper
• Bottle brush
• Brewing sanitiser
• Bottling bucket or fermenter tap
• Bottling wand
• Priming sugar
• Measuring equipment or a brewing calculator

Shop all Beer Bottles and Bottling Equipment online or instore.

Step 1: Confirm fermentation is finished

Do not bottle beer just because it has been in the fermenter for a certain number of days.

Take a hydrometer reading, then take another reading two or three days later. If the gravity remains stable, fermentation is usually complete.

Bottling beer that is still fermenting can lead to over-carbonation, gushing bottles or bottle bombs.

[Link: How to Take a Hydrometer Reading]

Step 2: Clean and sanitise bottles

Cleaning removes visible dirt and residue. Sanitising reduces microorganisms that can spoil your beer.

Inspect each bottle carefully. Do not use bottles with cracks, chips or damaged tops. Rinse bottles after drinking them so dried beer residue does not build up.

Sanitise bottles, caps, bottling wand and any equipment that will touch the finished beer.

Link: Brewing Cleaning and Sanitising

Step 3: Prepare priming sugar

Priming sugar creates carbonation in the sealed bottle.

For the most consistent result, dissolve your measured priming sugar in a small amount of boiled water, cool it and add it to a sanitised bottling bucket. Transfer the beer gently on top of the solution so it mixes evenly.

Avoid splashing during transfer. Oxygen exposure after fermentation can make beer taste stale or papery over time.

Use a calculator to determine the correct sugar amount for your batch size, beer style and preferred carbonation level.

Brewing Calculators

Step 4: Fill the bottles

Attach a bottling wand to your bottling bucket or fermenter tap. Place the wand at the bottom of each bottle and fill until beer reaches the top.

When you remove the wand, the displaced volume leaves the right amount of headspace for most beer bottles.

Leave a small amount of space below the cap. Too much headspace can reduce carbonation and increase oxidation risk.

Step 5: Cap the bottles

Place a fresh crown cap on each bottle and use a capper to seal it firmly.

Check that each cap is secure. A poor seal can cause flat beer, even if your priming sugar amount was correct.

Step 6: Condition the beer

Store bottles upright in a dark area at a suitable conditioning temperature. For most ales, room temperature is suitable.

Bottle conditioning usually takes around two weeks, but this depends on yeast health, beer strength and temperature. Strong beers may need longer.

After conditioning, chill one bottle and test it before moving the full batch into cold storage.

How long does bottled beer last?

Most homebrewed beer tastes best within the first few months, but stronger and darker beers can improve with age.

Store bottles upright in a cool, dark place. Heat and sunlight can damage beer quality quickly.

Common bottling problems

Flat beer

Possible causes include not enough priming sugar, poor cap seals, cold conditioning temperatures or weak yeast.

Gushing beer

This can happen when too much priming sugar is used, fermentation was not finished, bottles have an infection or beer is served too warm.

Sediment in the bottle

A small layer of yeast sediment is normal in bottle-conditioned beer. Pour carefully, leaving the final small amount of beer behind if you prefer a clearer glass.

Frequently asked questions

Can I bottle directly from the fermenter?

You can, but using a bottling bucket often makes it easier to mix priming sugar evenly and reduce sediment transfer.

Can I reuse screw-top beer bottles?

It is generally safer to use pry-off crown-cap bottles designed for home brewing. Some screw-top bottles may not seal reliably with standard caps.

Do I need to refrigerate beer while it carbonates?

No. Bottle-conditioned beer usually needs a warmer temperature first so the yeast can create carbonation. Chill it after carbonation is complete