Winery: Quinta Milú
Winemaking: Germán Robles Blanco / José Luis Herrero.
Viticulture: Enrique Herrero / Germán Robles Blanco / José Luis Herrero.
Wine name: Viñas Viejas.
Vintage: 2021.
Vintage classification: Very good
Bottling date: November 2022.
Vineyards: La Selva and la del Tío Paco.
Vineyard size: 0.2ha and 0.28ha.
Altitude: 906m a.s.l.
Location: La Aguilera.
Region: Burgos.
Soils: Clay-limestone.
Vineyard age: Over 100 years old.
Plantation density: 2500 vines / ha.
Pruning: Traditional bush vines.
Irrigation: No.
De-budding: No.
Suckering: No.
Leaf-plucking: No.
Green harvesting: No.
Harvest date: las week of September 2021
Harvest: By hand. Strict selection in the vineyard.
Destalking: No.
Crushing: No.
The grapes are traditionally foot-pressed.
Sulphur: Minimal dose at bottling.
Tanks: Open oak barrels 
Pre-fermentation maceration: No.
Fermentation temperature: 23 - 25°C.
Pumping over / punching down: Punching down.
Malolactic fermentation: 100% in barrel.
Indigenous yeast used in fermentation with no other additives
Ageing: 12 months in two french old barrels of 500l
Filtration: No.
Clarification: No.
Stabilization: No.
Production: 1.150 bottles of 75 l.  14,% Vol