Made up almost entirely of Hondarrabi Zuri, with the remaining Hondarrabi Beltza, the grapes come from Ametz Mendi and a handful of other historic vineyards within Getaria of Getariako Txakolina DO. The vines were planted from 1915 to 2000 upon beds of sandy, chalky loam. The winery sorts and selects for the healthiest grapes. Following a cold maceration, the grapes are destemmed and pressed in a closed pneumatic press. The fermentation is done by selected indigenous yeast and is maintained at very low temperatures to retain some dissolved CO2. The wine ages for six months in stainless steel sur lie before bottling.