How to brew beer from a fresh wort kit: step-by-step

Brewing beer from a fresh wort kit is the simplest legitimate way to make craft-quality beer at home. The brewer has already done the hard part — the milling, mashing, boiling and hopping. Your job is to ferment what they made and turn it into finished beer. If you can sanitise a few pieces of equipment and follow instructions for fifteen minutes, you can do this.

This guide walks through every step from the moment you collect your kit to the moment you crack open the first bottle. It assumes you've never brewed before. We'll cover what to do, what each step is actually for, and what to watch for if something looks off. If you're not sure what a fresh wort kit is in the first place, start with our complete fresh wort kit guide and come back to this one when you're ready to brew.

Before you start: what you'll need

Before you open the kit, get your gear together and put the wort somewhere cool to settle. Fresh wort kits ship refrigerated where possible, so let yours sit for a few hours after delivery to stabilise its temperature.

Here's the full equipment list. None of it is exotic and most homebrew shops sell a starter pack with everything below in one box for around $100–$150 AUD.

For packaging at the end of fermentation you'll also need bottles, caps, a bottle capper, and priming sugar — or a keg setup if you're going that direction. We cover packaging in Step 9 below.

Sanitise everything

Mix up your sanitiser solution in the bucket according to the instructions on the bottle. Most no-rinse sanitisers are concentrated — a small amount in water makes enough solution to do a whole brew day. You're aiming for the concentration the manufacturer specifies, not stronger; more isn't better and can actually be worse.

Once you have the solution, every single thing that will touch your wort or your yeast needs to be coated with it for the contact time specified on the bottle (usually 30 seconds to two minutes). That includes:

• The inside of the fermenter (swirl the solution around so it touches every internal surface, including the lid)
• The airlock and grommet
• The hydrometer and test jar
• Anything you'll use to open or pour from the wort pouch — scissors, your hands
• Any spoon, paddle or implement you might stir with

"No-rinse" means you don't need to rinse the equipment with water afterwards — rinsing with tap water would re-contaminate the gear. Drain the excess sanitiser back into your bucket and let surfaces drip dry, or just leave the foam in place. The residue is food-safe and won't affect your beer.

Keep your bucket of sanitiser nearby for the rest of the brew day. If you drop anything or need to grab something mid-process, dunk it back in the sanitiser before it touches the wort.

Bring the wort to temperature

Your fresh wort kit needs to be at fermentation temperature, or close to it, before you pour. For most ale styles — including Hazy Pale Ales, IPAs, stouts and lagers fermented warm — that's somewhere between 18°C and 22°C.

If the kit has been refrigerated, pull it out a few hours before brewing and let it come up gradually. If it's been sitting somewhere warm, you may need to chill it slightly. The exact target depends on the yeast you're using; check the temperature range printed on the yeast packet or the kit instructions.

Why this matters: pouring cold wort into a fermenter and pitching yeast onto it puts the yeast under thermal shock, which kills cells and slows fermentation. Pouring hot wort can kill the yeast outright. Aim for room temperature or a couple of degrees below, and you'll be fine.

Pour the wort into the fermenter

Wipe down the outside of the wort pouch with your sanitised cloth, especially around the opening or spout. Then open the kit and pour the entire contents into your fermenter.

Pour from a slight height — not so high that you're making a mess, but enough that the wort splashes a bit as it lands in the fermenter. This is intentional. It introduces oxygen into the wort, which the yeast needs in the first few hours of fermentation to build healthy cell walls and reproduce. After that initial aeration, oxygen becomes the enemy — but right now it's your friend.

If your fermenter is significantly larger than the kit (say, a 30L fermenter for a 23L kit), there'll be more headspace than ideal. That's fine for a first brew; the airlock will handle any excess CO₂. Just don't tip the fermenter sideways or shake it around at this stage — once the wort is in, leave it level.

Take an original gravity reading

Before you pitch the yeast, take a hydrometer reading. This step is technically optional — the beer will turn out the same if you skip it — but it's how you'll know later whether fermentation has actually finished, and it's how you calculate your finished beer's ABV. It takes 60 seconds.

Sanitise the hydrometer and the test jar. Draw a sample of wort from the fermenter (a sanitised turkey baster works, or the tap on your fermenter if it has one). Fill the test jar two-thirds full, drop the hydrometer in, and let it settle. Read the number where the surface of the liquid meets the hydrometer stem.

For a Hazy Pale Ale, expect an original gravity (OG) somewhere between 1.045 and 1.055. Write it down. You'll take a second reading at the end of fermentation to compare.

Tip the sample back into the fermenter when you're done. You don't need to drink it.

Pitch the yeast

"Pitching" is the brewing term for adding yeast to the wort. With modern dry brewing yeast, this is genuinely as simple as opening the packet and sprinkling it across the surface of the wort.

You don't need to stir it in. You don't need to rehydrate it first — both major commercial yeast producers, Fermentis and Lallemand, now officially endorse direct pitching for ale yeasts provided the wort is at or above 20°C. The older instruction to rehydrate in warm sterile water first still works fine, but it's no longer required and adds a step where contamination can sneak in.

Once the yeast is in:

1. Open the yeast packet using sanitised scissors
2. Sprinkle the contents across the surface of the wort, covering as much area as possible to avoid clumps
3. Don't stir, don't mix — the yeast will rehydrate itself on the wort surface and sink in within an hour or two
4. Seal the fermenter immediately afterwards

If you're brewing a kit that includes liquid yeast or a more specialised dry strain, follow the specific instructions on the packet — they'll override the general guidance above.

Seal and set the temperature

Put the lid on the fermenter and tighten until it's seated firmly. Fit the rubber grommet into the lid hole if it isn't already there, push the airlock in, and fill the airlock with your sanitiser solution up to the line marked on the side. The sanitiser keeps a barrier between your fermenter and the outside world while letting CO₂ bubble out.

Now move the fermenter to its fermentation location. This is the biggest decision you'll make on brew day, and it matters more than almost anything else.

Why temperature is everything

The temperature your beer ferments at determines how the yeast behaves — what flavour compounds it produces, how clean the beer tastes, and whether you get fruity esters, banana, clove, or harsh off-flavours like fusel alcohols. Too cold and fermentation stalls; too warm and you get hot, solvent-like flavours that no amount of conditioning will remove.

For most ale yeasts the sweet spot is 18°C to 20°C. A few degrees either side is usually fine, but try to keep it stable — the yeast hates swings.

How to actually achieve that in Australia

In an Australian winter, a spare room or interior cupboard often sits comfortably in range. In summer, especially in northern parts of the country, you'll need help. Common approaches, in order of cost:

• The cool-spot method — tile floors, garages with thermal mass, or rooms on the southern side of the house can stay cooler than the rest of the property. Free, but only works if your climate cooperates.
• The water-bath method — sit the fermenter in a large tub of water with a wet t-shirt draped over it. Evaporative cooling pulls 3–5°C off the wort temperature. Costs a few dollars.
• A second-hand bar fridge with a temperature controller — the gold standard. A used bar fridge from Gumtree or Facebook Marketplace plus an aftermarket controller (around $50) lets you set the exact fermentation temperature and hold it precisely.

Stick your adhesive thermometer to the side of the fermenter so you can check the temperature at a glance. The thermometer reads the wort temperature, which can be 2–4°C warmer than the surrounding air during active fermentation because the yeast itself generates heat.

Ferment for 10 to 14 days

You're now done with the active part of brewing. The yeast does the rest. Your job for the next two weeks is to leave it alone.

Days 1 to 3 — primary fermentation

Within 12 to 36 hours you'll see the airlock start to bubble. Activity ramps up quickly — by day two or three the airlock might be bubbling every couple of seconds and you'll see foam (krausen) forming on top of the wort if you peek through the fermenter. This is healthy. You'll smell yeast, malt and hops in the air around the fermenter.

Days 4 to 7 — the workhorse phase

Activity slows but doesn't stop. The yeast is working through the bulk of the sugars in the wort. The krausen starts to drop. The airlock bubbles less frequently. The smell around the fermenter shifts from sweet and yeasty to more recognisably beer-like.

Days 8 to 14 — conditioning

The visible fermentation is essentially done, but the yeast is still active. It's now cleaning up the by-products of its earlier work — reabsorbing compounds like diacetyl (which tastes like buttered popcorn) and acetaldehyde (which tastes like green apples). Skipping this phase is the most common beginner mistake; rush to bottling on day five and you'll end up with off-flavours that the yeast would have cleaned up if you'd waited.

The patience to do nothing is one of the most underrated skills in homebrewing.

Confirm fermentation is complete

Somewhere around day 10 to 14, the airlock should be bubbling only occasionally or not at all. This is when you take your second hydrometer reading — the final gravity (FG).

Sanitise the hydrometer, draw a sample, take the reading. Write it down. Then wait 48 hours and take a second reading. If the numbers are identical, fermentation is finished. If the second number is still dropping, leave the beer alone for another few days and check again.

For a Hazy Pale Ale, expect a final gravity around 1.010 to 1.014. The difference between OG and FG is what creates the alcohol. The rough calculation is:

(OG − FG) × 131.25 = ABV%

So an OG of 1.050 and an FG of 1.012 gives (0.050 − 0.012) × 131.25 = 4.99% ABV. Close enough to the Hazy Pale Ale target.

You can also taste the sample at this point. It won't be carbonated yet so it'll taste flat, but you should recognise the basic character of the finished beer. If it tastes pleasant if slightly flat, you've made beer.

Bottle or keg

The final stage. You've made beer — now you need to package it so it carbonates and you can drink it. There are two paths.

Bottling

Sanitise your bottles, your bottle capper, and a bottling bucket or second sanitised fermenter. Dissolve priming sugar in a small amount of boiled water (around 130–150g of dextrose for a 20-litre batch — check a priming sugar calculator online for your specific beer style and carbonation target) and add it to the bottling bucket. Siphon the finished beer from your fermenter into the bottling bucket, leaving the yeast sediment behind. Fill each bottle, cap each bottle, and store them somewhere at room temperature for two weeks.

The priming sugar gives the small amount of yeast still in suspension something to eat. The CO₂ they produce can't escape because the bottle is sealed, so it dissolves into the beer. That's carbonation.

After two weeks at room temperature, move the bottles to the fridge. Cold helps the CO₂ dissolve fully and clarifies the beer. After another couple of days in the cold, open one. If it pours with a head and carbonation, you're done.

Kegging

Kegging is faster and easier than bottling once you have the gear, but the upfront cost is higher (around $400–$600 AUD for a basic keg, CO₂ cylinder, regulator and tap setup). The process is the same up until packaging — siphon from the fermenter into a sanitised keg, seal it, hook up the CO₂ at around 12–15 PSI, and force-carbonate over a few days in the fridge. No priming sugar needed.

We'll cover both packaging methods in proper depth in a dedicated guide soon.

If something looks off

A few things that commonly worry first-time brewers but are usually nothing to panic about:

"The airlock isn't bubbling."

Either the lid seal is loose (CO₂ is escaping somewhere other than the airlock) or fermentation hasn't started. Check the lid first. Then check the wort temperature — if it's below 16°C, the yeast may be too cold to work. Warm it gently to 18–20°C and wait 24 hours.

"There's a film or skin on top of the wort."

If it's white and foamy and arrived in the first day or two, that's krausen, which is normal. If it's a thin, dry, often greyish film that appears later, that may be a sign of contamination — but take a hydrometer reading and a taste before declaring the batch dead. Many "infected" brews turn out fine.

"The beer is cloudy."

Cloudy beer is normal at the end of fermentation, especially for hazy styles which are deliberately cloudy. For clearer styles, time in the fridge after bottling does most of the clearing. If it's still cloudy after a month in cold storage, you may have an infection — but more likely you just used a yeast that doesn't drop out well, which is normal for many strains.

"The gravity isn't dropping anymore but the numbers seem high."

Stalled fermentation. Common causes are temperature too low, yeast too old, or under-pitched. Try gently warming the fermenter by a degree or two, gently rousing the yeast (swirl the fermenter without opening it), and waiting a few more days. If nothing happens after a week, you can repitch with a fresh packet of yeast.

For deeper troubleshooting, we cover the most common homebrewing problems and how to fix them in our common homebrew mistakes guide. For more on equipment specifically, see our homebrew equipment essentials.

That's the whole process. Sanitise, pour, pitch, seal, wait, package. The first brew always feels like more than that — there's a learning curve to the rhythm of it — but the actions themselves are simple. Trust the kit, trust the yeast, trust the process. In about four weeks you'll be pouring a beer you made yourself, and you'll wonder why you didn't start sooner.