Skip to content

FREE SHIPPING ON ORDERS OVER $99

MR. BEER KIT INSTRUCTIONS

How to Brew Beer with Your Mr. Beer Kit

Follow our step-by-step guide and brew your first batch with confidence.

  • Beginner-friendly step-by-step flow
  • Follow along with video
  • Designed for brew day on mobile

STEP-BY-STEP GUIDE

Brew Your Beer in 5 Simple Steps

Follow each step in order. You can scan the quick checklist or expand each section for more detail.

STEP 1

Sanitize Your Equipment

10–15 min

Sanitizing is the key to great-tasting beer — and it’s quick and easy.

  • Fill your keg with warm water to line 1
  • Add half the sanitizer packet and stir until dissolved
  • Close the lid and swirl to coat all surfaces
  • Let sit for at least 2 minutes
  • Run solution through the spigot briefly
  • Pour remaining solution into a bowl and place tools inside
Why this matters: Sanitizing prevents contamination and protects your beer’s flavor.
Watch out: Do not rinse — your equipment is ready to use as-is.
Having trouble sanitizing?

If you’re unsure whether something is clean enough, sanitize it again. When in doubt, re-sanitize.

STEP 2

Brew the Wort

20–30 min

This is where your beer comes to life.

  • Place the unopened extract can in hot tap water for 10 minutes
  • Heat 4 cups of water, then remove from heat
  • Add Booster and stir until dissolved (skip if not included)
  • Open the can and stir in the extract until fully dissolved
  • Fill the keg with cold water to line 1
  • Pour in the wort, then top off to line 2 and mix well
  • Sprinkle in yeast and close the lid — do not stir
Why this matters: This step creates your wort — the foundation of your beer.
Watch out: Make sure everything is fully dissolved before moving on.
Having trouble with this step?

Take your time mixing. Fully dissolving the ingredients helps create a smooth, consistent brew.

STEP 3

Ferment Your Beer

10–14 days

Now the yeast does the work — just set it and let it do its thing.

  • Place your keg in a cool, dark location
  • Keep temperature between 68–78°F (ideal: 70–72°F)
  • Let it sit undisturbed for 10–14 days
Why this matters: Yeast converts sugars into alcohol and carbonation — this is where your beer is made.
Watch out: Do not open the keg during fermentation.
Not seeing bubbles?

That’s normal. Fermentation doesn’t always show visible signs — trust the process and give it time.

STEP 4

Bottle Your Beer

20–30 min

Time to get your beer ready for carbonation.

  • Taste a small sample. If it tastes like flat beer, it is ready to bottle. If it tastes sweet, let it ferment longer
  • Clean and sanitize your bottles and bottling equipment
  • Do not rinse after sanitizing
  • Add carbonation drops or sugar to each bottle
  • Fill bottles to about 2 inches from the top
  • Cap tightly and check the seal on each bottle
Why this matters: Proper bottling helps your beer carbonate evenly and condition the right way.
Watch out: Carbonation drops are not included. Use Mr. Beer Carbonation Drops or table sugar.
Not sure if it’s ready to bottle?

If your beer still tastes sweet, give it more time. It should taste like flat beer before you bottle it.

STEP 5

Carbonate & Condition

2–3 weeks

This is where your beer becomes beer — carbonation and flavor develop over time.

  • Add 2 carbonation drops to each bottle
  • Store bottles upright at room temperature
  • Let sit for at least 14 days
  • Chill before drinking
Why this matters: Carbonation gives your beer its fizz and helps develop flavor.
Watch out: Your beer may taste better if you give it a little extra time to condition.
Not sure if it’s ready?

Chill one bottle for 48 hours and try it. If needed, let the rest sit a few more days before chilling.

← Back You’re Done 🍺

You’re Brewing 🍺

Nice work. Here’s what happens next as your beer comes to life.

Today Brew Day
Days 1–14 Fermentation
Days 14–21 Bottling
+2 Weeks Carbonation
Final Enjoy 🎉
Totally normal: Cloudy beer, bubbling, and sediment are all part of the process.
Be patient: Your beer will taste better if you give it enough time to condition.

Something Not Looking Right?

Don’t worry — most brewing issues are normal and easy to fix.

My beer looks cloudy

Cloudiness is completely normal, especially early on. It often clears during fermentation or after chilling.

I don’t see bubbles during fermentation

Not all fermentation produces visible bubbles. As long as you followed the steps and timing, your yeast is likely still working.

There’s stuff floating in my beer

This is usually yeast or protein — both are natural parts of the brewing process.

My beer smells weird

Some sulfur or yeast smells are normal during fermentation. These typically fade over time.

My beer isn’t carbonating

Make sure bottles are sealed and stored at room temperature. Give it more time — carbonation can take a couple of weeks.

There’s sediment in my bottle

This is normal. It’s leftover yeast. Pour slowly and leave the sediment behind if desired.

Still have questions?

Contact Support

FAQ

Frequently Asked Brewing Questions

New to brewing? These are the most common questions people ask before, during, and after their first batch.

How long does it take to brew beer with a Mr. Beer kit?

Brew day usually takes less than an hour. After that, fermentation and carbonation take time, so your full batch may be ready in a few weeks depending on the recipe and conditions.

Do I need to sanitize everything?

Yes. Anything that touches your beer after brewing should be properly sanitized. This helps prevent contamination and protects flavor.

Do I need to boil the beer?

Follow the instructions for your specific kit or refill. Some Mr. Beer processes are simplified for beginners, so always use the directions included with your product.

Why does my beer look cloudy?

Cloudiness can be normal during brewing, fermentation, or after bottling. Many beers clear with time, chilling, and careful pouring.

How do I know when fermentation is done?

Fermentation usually follows the timeline in your instructions, but visual signs can vary. Use the recommended wait time for your recipe, and do not rely only on bubbles.

Why is there sediment in the bottle?

Sediment is usually leftover yeast from bottle conditioning. It is normal. Pour slowly and leave the last bit in the bottle if you prefer a clearer glass.

How long should I wait before drinking my beer?

Your beer needs time to ferment, carbonate, and condition. Even when it is technically ready, a little extra time can improve flavor.

What if I make a mistake?

Most first-time brewing mistakes are minor. Homebrewing is forgiving, and many batches turn out great even when the process is not perfect.