CASORZO & MALVASIA: It was chance that caused a natural wonder to grow among the Malvasia vineyards. It's believed that a little bird, a few decades ago, dropped a cherry stone on the top of an ancient mulberry tree in the valley between Casorzo and Grana. Thus was born the "Bialbero della Felicità" (Two Trees of Happiness), with the cherry tree continuing to grow, resting on the mulberry tree to create a single monumental tree, located a short distance from the imaginary line of the 45th parallel of north latitude.