Galestro soils are schistous, crumbly rock with clay, and marl (known as galestro), Alberese is calcareous soil with clay Other soils are sandstone and sandy soils. Benefits: The soils combine good drainage with sufficient water-holding capacity. Galestro is said to give aromatic wines with the potential to age. Soils with more clay are said to give wines with more structure and body. Some work on the hillsides has to be done by hand, raising costs.