I've had the phenomenal 1970 Castillo on a number of occasions; it is a solid, powerful and balanced vintage that remains lively and with years ahead of it, but with enough complexity already. We didn't taste the Castillo, but rather got a bottle of the 1970 Reserva, which was obviously not at the same level as the other wines. It has a very developed nose with hints of nuts and honey. I like the palate better than the nose; it's round and long, with great acidity, some notes of balsamic herbs, yellow flowers and something earthy, with hints of mushrooms. The palate shows a very complete and complex wine, extremely tasty. The technical data says it's a blend of 94% Viura and 6% Malvasía Riojana fermented in old oak vats, where it was kept for nine months before being put into newish American oak barrels and was matured for almost five years, until it was bottled in May 1976. The bottle tasted was 13.15% alcohol with a pH of 3.03, with 7.42 grams of tartaric acid, 0.85 grams of volatile acidity and 136 milligrams of sulfur.