“Basque pepper is the treasured chile of the Basque country, known for its robust and slightly smoky flavor.  … mildly hot but only 5000 on scoville. Very good flavor. … Plant is from 2-5 ft. tall, has good yields of more aromatic and sweet than hot peppers maturing from green to a deep red, usually from 15-30 per plant. … To be known as “Piment d’Espelette”, the chile must be grown, harvested and dried according to specific cultural traditions in the area around Espelette. Best used dried for its treasured powder.”  Text and picture from Restoration Seeds.