Complexa is red Portuguese wine grape used in the production of Madeira. The grape was created as a crossing of Castelao, Muscat Hamburg and Tintinha in the 1960s. The grape provides a deep color with less tannins than the commonly used Tinta Negra Mole. J. Robinson (ed) "The Oxford Companion to Wine" Third Edition pg 191 Oxford University Press 2006
See also List of Portuguese grape varieties
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