The isolation of autochthonous yeasts from fresh grapes of the Maraština variety is in progress. Isolation is carried out in the Microbiological Laboratory by our colaborator Dr Vesna Milanović from the Polytechnic University of Marche in Ancona, Italy. The pictures show yeasts grown on a WL nutrient medium. The different morphology of the yeasts is visible. The samples were prepared for the following stages of work: purification and isolation of DNA, PCR analysis, and sequencing of PCR products.