“Each time Vesuvius erupted, it covered its slopes with a deep layer of a remarkable natural fertilizer called potash, and as a result the mountain supported dozens of species of fruit and vegetables which grew nowhere else in all Italy, a culinary advantage which more than compensated for the area's occasional dangers. In the case of apricots, the varieties included the firm-fleshed Cafona, the juicy Palummella, the bittersweet Boccuccia liscia, the peachlike Pellecchiella and the spiky-skinned but incomparably succulent Spinosa.”