In Italy, soils are rich in magnesium, which is responsible for the bitterness in wines,’ Lydia Bourguignon told me in Franciacorta, on the sidelines of the presentation by founder Maurizio Zanella of the redisgorged 1980 Annamaria Clementi Franciacorta cuvée at Ca’ del Bosco last October. Lydia is a reliable source and an authoritative and respected figure worldwide, who has been a consultant for Zanella for 10 years.
Her statement, perhaps taken for granted by some experts, struck me
