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 ISBN 0-19-860990-6
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