This paper presents the website SUPELEC RECIPES developed by our group, to generate recipes for producing time-stable mixtures that mimic a large variety of biological tissues, over a wide frequency range. Dielectric characterization of the mixtures produced, provides experimental validation of the recipes generated by the site. More than 80 recipes are currently available. The site also provides access to STL files for printing breast and head phantoms and/or running electromagnetic simulations with anthropomorphic objects.