What is it?

Briquettes made from recycled coffee grounds for use in wood-burners, stoves and open fires.

More than 2.25 billion cups of coffee are consumed in the world each day. That's a lot of waste.

Bio-Bean aim to tackle this issue by recycling coffee grounds into a fuel source. The goal is to reduce greenhouse gases and divert waste away from landfill.

Good Points?

Each log contains the equivalent of 25 cups of coffee. They are billed as burning 20 per cent hotter and longer than kiln-dried wood meaning you can enjoy a cosy home coupled with slightly more efficient fuel expenditure.

According to the fact sheet provided by Cambridgeshire-based Bio-Bean, recycling coffee waste this way generates 80 per cent fewer emissions than if sent to landfill.

Left to decompose in landfill sites, the coffee grounds slowly emit methane, a greenhouse gas that is 28 times more potent than carbon dioxide over a 100-year period.

In practical terms, the coffee logs catch fire easily and are ideal as an ignition aid to burn larger amounts of wood.

One question I had was whether they would emit a pungent coffee aroma: they did not.

Bad points?

Having burned the coffee logs in conjunction with wood, it's noticeable how unstable they can become after a few minutes of heat.

They crumble easily if disturbed which can impact the overall heat distribution of the fire if there are burning materials underneath.

Best for ...

Fans of recycling.

Avoid if ...

The idea of wood-burners, stoves and open fires leaves you cold.

Score: 9/10.

Bio-Bean Coffee Logs, £6.99 (bio-bean.com)