In 2014 the idea was born to develop a plant based product that can replace the unwanted but necessary chemical compound in the wine, sulfite. After an extensive literature study 600 in vitro tests were done to identify what plant extracts are suitable to cover all features of sulfite. Since 2016 actual trials at recommended wineries all over the world are executed. With success. In 2019 we obtained the authorization to do a large scale oenological experiment at a winemaker in the Netherlands. The first 4000 bottles of wine with Estaan were produced and successfully sold at the retailer.