Japan steps up efforts on cooking oil in race for sustainable aviation fuel​​

Japanese homemaker Maki Watanabe carefully pours into a plastic bottle the oil she used to cook her deep-fried aubergines, doing her part in her Tokyo kitchen for a national effort to ramp up production of eco-friendly jet fuel.

"It would take a tremendous amount to make an aircraft fly, so I hope we can collect more," said Watanabe, whose penchant for cooking allows her to donate about 40 liters a year.

Her contribution is pooled at a nearby supermarket that is among roughly ​300 participants in a public-private project dubbed "Fry to Fly," as the Iran war squeezes energy supply and raises costs for the resource-poor country.

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