The main feature of cava Bertha is its assorted selection of base wines. It is a very important process to obtain and produce a good quality cava. This year we have tested more than 50 different base wines, between Macabeu, Xarel·lo, Parellada, Chardonay and Pinot Noir varieties. From those 50 wines, we select one of each variety, each one with enough quality to ensure a good and desired balance of percentages. With this selection process, we can confirm that cava Bertha uses the best quality and prestigious wines from Penedès region. A comparative taste and a full analytic of each wine, gives us the enough guarantee of maximum quality.