1) 100 % of the grapes must come from within DOC/DOP Vinho Verde, DOC/DOP Douro or DOC/DOP Dão (written confirmation from producer regarding the origin of the grapes must accompany the offer)
2) Palhete must appear on label
3) Spontaneously fermented (written confirmation from producer must accompany the offer)
4) No influence of wood
5) Unfiltered 6) Only one offer per producer. If more than one offer is submitted by the same producer, only the lowest priced offer will be assessed, regardless of wholesaler
7) «Guarantee of supply» must accompany the offer
8) The producer must have a location address within the same DOC/DOP as the grape origin (written confirmation from producer must accompany the offer)
9) Samples must be delivered in ready-to-sell packaging with the original label