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The business of roasting coffee beans was a market worth over a billion dollars

globally in 2022. That's according to Grandview research which which projects that figure could double by 2030.

Traditional roasters powered by the fossil fuel natural gas still dominate the market.

These machines are big and bulky and kind of look like part of a train.

But the makers of more compact electric roasters are piling into the business and they have an edge.

They tout themselves as high-tech alternatives that are more environmentally friendly and cheaper

to run than their old school counterparts.

The BBC's Freelinsy has more.

Now what's going to happen is the bean itself,

temperature is going to go up, up, up, up, and we're going to bring this relative bean

...