
Intelligent cooking systems, resource-saving water technologies and well thought-out processes: new studies and practical examples show how digitalization and sustainability go hand in hand in professional kitchens. What the industry can learn from this – and why investing in smart systems is worthwhile.
The results of the practical study “Increasing the efficiency of commercial kitchens”, carried out by Weihenstephan-Triesdorf University of Applied Sciences together with Rational, speak for themselves: modern kitchen technology not only saves water and energy, but also improves the quality of the food and the working conditions for staff.
The study focused on the kitchen conversion of AXA Konzern AG in Cologne. The use of intelligent cooking systems such as the iVario Pro and iCombi Pro as well as the ConnectedCooking digital management system made it possible to achieve remarkable savings.
“For example, water consumption was reduced by 47.9%”, emphasizes study director Prof. Dr. Michael Greiner. The energy saving of 24.1% was also significant, despite the additional blast chiller. A key result: it's not the connected load that counts, but efficient operation - power peaks were reduced by 20.5%, which lowers energy costs in the long term.
In addition to ecological and economic factors, the perspective of the employees was also taken into account. Height-adjustable cooking systems and an optimized production model (e.g. cook & chill process) ensure ergonomic working and relieve the team through better planning. Food quality increases - not least because food no longer has to be kept warm for hours. “Modern technology makes everyday work easier and makes kitchen jobs more attractive - a real advantage in view of the shortage of skilled workers”, says Greiner.
The hotel sector also shows how innovation and sustainability can go hand in hand. The voco Brussels City North Hotel relies on water-saving faucets from hansgrohe combined with the intelligent gray water recycling system from Hydraloop. With success: around 1.2 million liters of water are saved there every year.
The EcoSmart technology ensures that mixers and showers significantly reduce water consumption - while maintaining the same level of comfort. At the same time, the shower waste water is treated using Hydraloop technology and reused for toilet flushing.
“By combining water-saving technology with a well thought-out recycling concept, we can unite sustainability and design,” explains Hotel Manager Steven Vandevelde. An approach that has been rewarded with the Green Key certificate for sustainability - and can serve as a role model for the industry.
Whether in commercial kitchens or hotel bathrooms - the way to greater sustainability is through intelligent technologies and well thought-out processes. The examples show impressively that investing in smart kitchen appliances, water recycling and energy-efficient systems not only pays off ecologically, but also economically. For the industry, this means that those who modernize now not only strengthen their future viability, but also their attractiveness as an employer and guest satisfaction.
Leonardo Hotels is expanding its commitment and turning World Cleanup Day 2025 into a European movement: Employees from 140 hotels in 12 countries are participating in cleanup campaigns – from Berlin to Bucharest, from London to Rome. Instead of a single day, the period has been extended to ten days to allow as many teams as possible to participate.
Casseroles are underestimated. They are often considered cozy, filling, a little old-fashioned—but they are actually culinary narrative forms. This is exactly where Ilse Fischer comes in. Lasagne, Moussaka und Co.: Das Glück in Schichten (Lasagna, Moussaka and Co.: Happiness in Layers) is not just another “lasagna book,” but a collection of cultural identities, layered in dough, vegetables, sauces, and memories.
What sets this book apart from classic recipe collections is its focus on the principle of layering. Fischer shows that whether it’s Italian vincigrassi, Greek pastitsio, Alsatian baeckeoffe, or Savoyard tartiflette, ingredients are layered, interwoven, and combined in the oven to create something greater than the sum of its parts throughout Europe. It’s about more than technique. It’s about origin, climate, availability, and food culture.
INFO:
Lasagne, Moussaka and Co. – Happiness in Layers
Author: Ilse Fischer
Illustrations: Gudy Steinmill-Hommel
Publisher: Christian Verlag GmbH
Publication date: November 2025
Length: 256 pages
Binding: Hardcover
Language: German
ISBN: 978-3-9895101-6-6
Intelligent cooking systems, resource-saving water technologies and well thought-out processes: new studies and practical examples show how digitalization and sustainability go hand in hand in professional kitchens. What the industry can learn from this – and why investing in smart systems is worthwhile.