Fig. 4From: Vino de Tea (pine heartwood wine) from La Palma (Spain): ethnographic and physic-chemical characterization of a unique fermented productHigh-altitude vineyard in northern La Palma. The island holds one the highest vineyards in the world, and the highest in Spain and Europe, ranging between 700 and 1600 m high. This allows grapes to reach the necessary acidity to produce quality wines. Tea wines were traditionally produced with mixtures of grapes from these vineyards. Source: authorsBack to article page