Winnow AI Food Waste Reduction: A Case of Marriott UK, Ireland and Nordics

Abstract

Marriott UK, Ireland, and Nordics partnered with Winnow to implement AI food waste reduction technology in 53 hotels, achieving a 25% reduction in food waste within six months. Winnow’s system uses computer vision and weighing scales to identify discarded food, assign costs, and generate real-time data and detailed reports. These insights help chefs and managers adjust menus and portion sizes, saving up to 8% on food purchasing. Staff receive coaching to maximize ingredient use and promote zero waste. However, the technology cannot yet process mixed food types, requiring manual separation by staff until further improvements are made.