Within and outside Deltares, there is currently a push towards reproducible model projects. The goal is to ensure proper quality assurance of projects to leave more time for the actual analysis. In recent yearss, Deltares has embraced Open-Source software with the motto ‘dare to share’, which has been a crucial step towards achieving project reproducibility. In this tutorial, we will explore the essential steps and best practices to ensure that your numerical models are reproducible and easily shareable. We drafted a cookbook (version 0.1) to get you started.