In France, bakeries that throw away unsold bread at the end of the day end up wasting tones of food every year.

To combat this waste, one ingenious Frenchman by the name of Franck Wallet has developed a machine. He calls it the 'Crumbler'.

The Crumbler is a machine that crushes old bread into a powder that can be recycled as its own flour. That flour can be used to make bread, cookies, muffins and pastries.

A further, perhaps ironic, benefit of the Crumbler is that products made using its recycled flour last longer than those made with typical flour.

"I really admired the project," François Mateus, director of the Perrin boulangeries told Brut. "I decided to get involved and there we are. To be able to reuse unsold bread that used to be thrown away, to be able to use it in other products, it's phenomenal."

Over 30 French bakeries currently use the Crumbler, which itself sells for around 2,000 euros.

Old bread has also been recycled in other ways in France. A brewer from Chartres recycles baguettes to make beer. He dries the bread, mixes it with malt, and brews a blonde beer with a light toasted bread taste.