Popular Science

Entrepreneurs are turning trash into food, drink, and clean energy

Bread-powered beer and other delights.




When Tristram Stuart was growing up on a farm in England, he raised pigs as a hobby. He saw that much of the thrown-out food he was feeding them was actually fit for humans. One day, having found an appetizing loaf of sun-dried tomato bread in the pile of waste, he sat down and ate lunch with his pigs.

Stuart recognized early — he was about 15 — the folly of food waste, and vowed to do something about it. “I grew up with a strong relationship with the land,” he said. “The pigs made me see how food waste and environmental degradation are so intertwined.”

The result was , a company that brews beer from unsold bread and the discarded heels of, an environmental advocacy organization Stuart founded to fight global food waste. Toast began in the UK in 2016 and in the United States this year. The company plans to launch soon in South Africa and Iceland.

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