Severe infestations of Phylloxera occurred throughout Europe, and the industrial revolution shortly afterwards wiped out a considerable amount of the truffle producing fields across the continent. I absolutely liked the hazelnut & truffle pairing, and the citrus lightened it, balancing out the richer flavours. Because Tuscany and Sardinia are warmer climate regions, Vermentino has a barely more ripe flavor profile exuding notes of citrus (suppose lime and grapefruit) as well as Granny Smith apples.