Patron's food waste recycled into biogas is reused in the cooking process.

BIOMAT is a restaurant concept by product designer Vera Wiedermann that invites diners to bring their own bags of biodegradable food waste to the venue. These bags are then weighed for their energy value, and handed back to the customer as a discount voucher to use in the restaurant.

For every donated kilo of bio-waste, the customer received a single Euro discount off the food being served at the restaurant, which made its debut appearance during the Vienna Design Week earlier this month. After the biodegradable food waste was handed over, the material was sent away to be recycled into a biogas used for cooking that is produced when food waste is broken down.

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