1) Blend of min. 3 different grape varieties
2) 100 % of the grapes must come from Serra da Estrela (written confirmation from producer must accompany the offer)
3) Min. 25 years old vines (written confirmation from producer must accompany the offer)
4) No or discreet influence of skin maceration
5) Min. 40 % of the wine must be barrel fermented (written confirmation from producer must accompany the offer)
6) Only one offer per manufacturer. If more than one offer is submitted from the same manufacturer, only the lowest priced offer will be assessed for purchase, regardless of wholesaler
7) «Guarantee of supply» must accompany the offer
8) One-lot min. 240 bottles