Known also as noble rot, it is a parasitic fungus that can become an unwanted guest in vines attacking grapes clusters. It can cause two different types of infection: the gray rot, which causes the fall of bunches affected and the noble rot, which effectively increases the sugar content of grapes causing, especially in red grapes, a premature aging. It is the fungus that causes the highest damage in the vineyards around the world. However, if weather conditions permit it, the effects of the parasite create on white grapes an incredible concentrate to transform the must into one of the sweetest (and most expensive) dessert wines in the world.
