We at Stag Roasters strongly recommend everyone gives home roasting a go.

It’s quick, easy, and most of all, fun.

You get the opportunity to watch and listen how the coffee bean changes during its roasting process.



Do you like the smell of freshly roasted beans? Then home roasting is for you.



  • Step 1 – Home Roasting Device
  • Step 2 – Green Bean Selection
  • Step 3 – Setup
  • Step 4 – Roasting
  • Step 5 – Chaff Separation
  • Step 6 – Storage
  • Step 7 – Grind


The following guide introduces you to one of many ways to roast a bean

to your desired taste with some practice.

No more messing about, let’s get to home roasting!

Step 1: Home Roasting device


In our honest opinion, the quickest and simplest system for home roasting of green beans, is the old

fashioned electric hot air popcorn poppers. These are typically sourced from USA these days, but can be

found in the UK through good of reliable eBay or Amazon merchants. Typical examples of what you would

expect to purchase are seen below.

We recommend the Orbit Poppers as they have an thermostatic controller built into the device, that will

allow the popcorn maker to cut out and switch off, if the popcorn maker gets too hot. Believe us when we

say, this will happen, and it‘s always better to be safe.

Stag Roasters are aiming to introduce a Home Roasting Starters Kit in the near future and will be able to

provide all your home roasting needs.

Please note, other home roasting devices are available in the market place, at varied costs.

Step 2: Green Bean Selection

Choose your green beans. We would recommend a 500g or 1kg to start you off

You would be amazed at how many cups of coffee you will be able to make once you start home roasting.

Simply select the Green Bean option in our Shop.

All our green beans come ready to be roasted.

Step 3: Setup


Finally, some home roasting

Basic items you will need:


  1. Popper popcorn maker.
  2. Green beans.
  3. Colander or kitchen sieve.
  4. Roasted beans storage device (ideally a Vacuum sealed unit).
  5. Electrical power.
  6. Clean outside area.


We propose you do all your roasting in a well-ventilated area so the chaff is free to circulate freely.

STRONG RECOMMENDATION – first time you try this at home, roast your beans outside on a dry day.

Once you see how the chaff can freely circulate, you will thank us for not trying it in your kitchen.

What is Chaff?


It is the waste product of the coffee bean roasting process. The green beans skin or “hull” comes off during

the roasting processes at varied temperatures. Commercial roasting use an extraction process that removes

the chaff from the final output, and give us a bag of cleanly roasted beans.


As coffee consumers we are not used to seeing Chaff mixed in with our beans, it looks messy and

undesirable. Yes, there are options for using this Chaff, rather than throwing away into the bin – Chaff Uses.

Step 4: Roasting

WARNING – You should only roast your own beans in a controlled environment, and use the popcorn maker as

per the manufacturer’s instructions. Coffee beans are extremely hot to the touch when roasting or some up to

an hour later. Do not touch roasted beans without suitable hand protection. In the end of the day, coffee roasting

falls under food preparation and as such within your own home it is your responsibility to be safe and use

equipment at your own risk.


  • No oil is required, the roasting process shall generate its own oils.
  • Popper popcorn makers come with a handy little measuring spoon. We recommend you use one spoon full of green beans on your first attempt of roasting. Watch how they jump, darken and listen for that tell-tale crack.
  • Turn them on, and wait until they turn to the colour you desire. Its no more complicated than this as part of home roasting is as simple as that.

– Our Brewing Guide helps you understand roast types vs colour, acidity, body and caffeine content.

  • Once you have become accustomed with how the beans will roast and behave, then we would typically fill have the popcorn makers roasting chute/tunnel with green beans.

– They will naturally turn over themselves, and you may find initially that the coffee beans at the bottom are darker than the top. Well there is no harm in turning off the popcorn maker during the process. Pore out into the colander or sieve, and then using a funnel, reintroduce them into the popcorn maker.

Step 5: Chaff Separation

  • Chaff can look undesirable in your coffee bean storage, as its not what we expect to see. People have differing opinions on home roasting and the need to remove it.

– Leave it in – this does no harm to whoever is drinking it.

– Remove, to make it look commercially bought and clean.

  • Our recommendation is to shake the beans vigorously inside your colander, and the majority of chaff will disappear. If not successful, you can put two colanders together, shake and hopefully you get a better result. If not all chaff is removed, don’t worry, it won’t affect the taste if there isn’t substantial quantity remaining. Then move to storage.
  • The option remains to wash the beans, only after they have cooled down so they feel cold to the touch. Once washed, allow them to dry out once again, preferably in the sun, or warm environment such as the kitchen.

Step 6: Storage

We recommend using a vacuum storage mechanism to ensure the freshness and life is kept within the coffee beans. Many options are available in the market, we provide some wthin our product selection.

Roasted coffee beans are extremely hot to the touch during and after the roasting process for up to an hour, sometime more. It is the home user’s (roaster’s) responsibility to make sure the beans are cold to the touch prior to storage. If you store them with residual heat within the beans, moisture and condensation will generate within the vacuum storage device (as not all air is removed), this will then lead to the beans becoming mouldy over time.

Step 7: Grind

When it comes that wonderful time to prepare your fresh cup of home roasted coffee, it is essential to have

a good quality grinder to get those beans down to the right granule size for the chosen Brewing Style.


You have a few options available to you to find the taste you love; try:

• Different green coffee beans

• Different colours of roast, light, medium or dark

• A stove top popcorn maker

• Combine different roasted coffee beans – shake and grind. A mixed blend is the result

Once you get the knack, you won’t look back!