Spanish name (also Solera Criadera system) for the traditional storage and blending system of younger and older wines in the production of sherry, The process is also used alternatively in the production of Madeira. Malaga, Fires ( brandy. whiskey etc.) and vinegar (Wine vinegar) used. The name is derived from the lowest barrel row (Solera = "lying on the ground"). Every year, a part of the finished matured or aged sherry is removed from the bottom row of barrels for marketing. From bottom to top, the removal (Saca) and the filling (Rocío) takes place from the respective overlying row.