They’re wonderfuel…


Coffee Logs are eco heat logs for woodburners, stoves and open fires, made from your spent coffee grounds.

Each year bio-bean processes thousands of tonnes of waste coffee grounds, collected from coffee shops around the UK. Recycling coffee helps reduce greenhouse gases, diverts waste away from costly landfill and gives your latte a useful second life.

At the world’s first coffee recycling factory in Cambridgeshire, bio-bean’s engineers turns these coffee grounds into amazing Coffee Logs – the sustainable alternative to conventional fossil fuels.

Each carbon neutral Coffee Log is made from the grounds of 25 cups of coffee and burns 20% hotter and longer than kiln-dried wood. And recycling coffee waste generates 80% less emissions than landfill – so if you are looking to heat your home and not the planet, Coffee Logs are the perfect choice.

To find out more about coffee recycling with bio-bean click here.

Available to buy at

Logs Direct
National Trust

Belfast Telegraph
Evening Standard
The Sun
The Times

Coffee Logs can be used in stoves, chimineas and open fires.

1.  Place two firelighters on appliance bed and cover with kindling.
2.  Add two or three Coffee Logs to the appliance bed.
3.  Light the firelighters using matches or a lighter.
4.  Do not disturb the Coffee Logs for 15 minutes whilst they ignite. Do not use petrol or any other volatile fuel to light.
5.  When the fire is established, add more Coffee Logs as required. An extractor or ventilation may be required for indoor burning.

Stoves: Use only in compatible stoves. Build up Coffee Logs gradually, taking care not to overload your stove. Always follow the stove manufacturer’s guidelines.

Chimineas: Make sure your chiminea is on a level, stable surface outdoors, and a safe distance from surrounding objects. Add Coffee Logs (taking care not to overload your chiminea) and follow the manufacturer’s guidelines.

Open fires: Contain fires, ensure chimneys are clear, and keep all combustible materials at a safe distance. Ensure a fireproof space and use fire screens if necessary. Do not overload the grate, and follow manufacturer guidelines.

Each bag of Coffee Logs contains 16 Logs and weighs approximately 8kg.

dimensions of coffee log

– Keep out of reach of children and animals. Do not eat. Coffee Logs contain a high level of caffeine which can be potentially harmful to humans and animals if ingested. Seek medical advice if swallowed.

– Store your Coffee Logs in a cool, dry, well-ventilated area.

– Never leave an appliance unattended, and use a fire screen. Do not place your appliance near anything that is flammable or combustible.

– Keep a fire extinguisher to hand at all times and use appropriate tools with heat-proof gloves. Normal fire extinguishing methods apply.

– In the case of contact with eyes, rinse for 15-20 minutes to ensure complete removal and do not rub your eyes. If eye irritation persists, seek medical advice. Do not attempt to manually remove anything from your eyes.

– Be carbon monoxide aware.

From Ocado

★★★★★ These burn extraordinarily well and long and make a truly lovely fire

★★★★★ Good eco-credentials, burn well. Can’t ask for more 🙂

★★★★★ Burn very well in our log burner, and love the green credentials. They kick out a lot of heat and are easy to light too

From Log Barn

★★★★★ Excellent fuel, perfect for our stove as it burns hot, lights easily and leaves a fine ash which drops easily into the ash pan. Would recommend and will order again.

★★★★★ I love the whole concept of the fact that used coffee grounds are manufactured into the heat logs and they work amazingly well. They give off great heat and last a long time. Highly recommend them.

From Abel & Cole

★★★★★ Really impressed with these logs. I have a small Chiminea, and used 3 logs at a time. Seems to throw out far more heat than wood, and doesn’t make you smell smokey! I used about half a bag in one evening.

From Amazon

★★★★★ Easy to light using a small amount of kindling. The heat given off from the logs is appears superior to wood and lasts much longer. This is a clean and efficient product and with the eco friendly credentials this is definitely a product I will continue to purchase. I would definitely recommend this product.

★★★★★These Bio Bean Coffee Logs are an amazing find! They have sound eco-credentials and burn with a greater intensity than regular logs. We have been using them to start / boost our open log fire, as well as having pure coffee log fires – which are wonderful. There is also a lovely coffee-ish aroma when you open the bag.

★★★★★ Started mine in the burner yesterday, getting a really good 3-4 hour burn time (depending on burner air vent position obv) Wonderful smell on opening the bag too. Will be ordering more.

★★★★★ Great idea! Fantastic product! This has to be the way forward. Let’s recycle and regenerate! Time to wake up and smell the coffee! Well done BioBean

★★★★★ Great logs brilliant eco friendly alternative to wood

Do Coffee Logs smell like coffee?

Coffee Logs smell similar to wood as they burn, and some of our customers say you can smell roasted coffee when you first open the bag.

Where can they be used?

Coffee Logs can be used in solid-fuel stoves, open fires and outdoor heating appliances such as chimineas and fire pits. We find they burn especially well in stoves. Coffee Logs are not recommended for use as a barbecue fuel.

How do they help the environment?

Coffee Logs help the environment in a number of ways:

– They are made from recycled waste coffee, much of which would previously have been sent to landfill, where it releases large quantities of the potent greenhouse gas methane.

– Unlike first-generation biomass, they are made from organic waste material, so no trees are cut down to produce them.

– Coffee Logs are carbon-neutral according to UK Government criteria. The carbon emitted from burning Coffee Logs is re-absorbed via photosynthesis as more coffee beans are grown.

Why do they burn hotter than wood?

Coffee Logs have a higher calorific content than wood, producing a hotter burn.

Why are they coated in wax?

The thin wax coating protects the Coffee Log during transit and acts as an ignition agent.

How long do they burn for?

If Coffee Logs are left undisturbed with restricted airflow they should burn in stoves for over an hour. They may not last quite as long in open fires. It’s best to follow your own appliance’s guidelines to optimise the burn.

Are they a smokeless fuel?

Coffee Logs are not a registered smokeless fuel at this time.

Will the Coffee Logs create a build-up of soot in my chimney?

Our tests show that Coffee Logs do not cause more build-up compared to other briquettes or solid fuels. We recommend consulting an expert for advice on how often you should get your chimney cleaned.

Do they carry risks if ingested?

Coffee Logs have a high caffeine content. Do not ingest, and store out of reach of animals and children.

Is the packaging recyclable?

Yes, the packaging is made from paper that is recyclable in the UK – or it can be used as your firelighter!

What is the recommended way to dispose of the ash?

Coffee Logs don’t typically create a lot of ash, but we suggest spreading what there is on your garden as it can be beneficial to the soil.

Where are the waste coffee grounds from?

bio-bean works with waste management companies to collect waste from all around the UK. We collect and recycle used coffee grounds from transport hubs, independent coffee shops, property groups and coffee chains.

Where are Coffee Logs made?

Coffee Logs are made in the bio-bean coffee recycling factory at Alconbury Weald, Cambridgeshire. This factory is the only one of its kind in the world, and we’re very proud of it!

Can I recycle my own used coffee grounds with bio-bean?

We currently collect from businesses only. However, here is a useful guide to giving your own used coffee grounds a second life, from our friends at CRU Kafe.

Do bio-bean make any other coffee-derived products?

Yes, bio-bean makes coffee pellets for use in biomass boilers, and we are currently working on a number of waste coffee oil-derived products. Please contact for more information.

Can I get a discount on a bulk order?

Please contact for information on bulk purchases.

Comments or questions? Please contact us.

thermometer icon

Burns hotter than wood

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Burns longer than wood

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For multi-fuel stoves and open fires

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100% carbon neutral biofuel

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Cheaper than other briquettes

Made in Britain logo

 Made in Great Britain

“bio-bean’s innovative coffee logs are the most exciting development the UK stove and fireplace market has ever seen.”
Barney Dorman, CEO, Log Delivery

“An outstanding use of a waste material.”
Matt Moore, Head of Sustainability, Science Museum

“Engineering efficiency of re-using waste is high. bio-bean have found a worthy goal that others overlook.”
Steve Wozniak, Apple

“’bio-bean is one of the stand-out technologies I have seen this year. Recycling coffee grounds into an efficient solid fuel is an inspired idea. ”

Coffee Logs are an outstanding use of a waste material.”

“Engineering efficiency of re-using waste is high. bio-bean have found a worthy goal that others overlook.”

Jason Bradbury, The Gadget Show

Matt Moore, The Science Museum

Steve Wozniak, Apple