The success story of Rational and K & Co Sustainable Kitchen Bar (Madrid), National Hospitality Award 2019, the first restaurant in Spain audited and certified in its entirety with the international eco-label ECOCOOK level 4, the highest possible score. Their practices try to contribute to environmental and ecosystem protection, respect for animals, health and healthy lifestyles of people and to reduce their CO2 emissions into the atmosphere and incorporates in their kitchen the SelfCookingCenter, which cooks in a more homogeneous way, it reduces waste, less waste and less oil consumption. It saves cooking time and improves conditions for kitchen workers.