Cupped oysters grow in claires at a minimal immersion of 4 months, with a maximum density of 5 oysters per square meter (preferably 2 oysters per square meter) and having an index of quality of greater than 12. The calibres are the same as the specials: minimum marketable size of 50 g.
These oysters are round and fleshy, with the characteristic taste of the terroir of “Marennes-Oléron”. The flesh has a “fruity” taste and lingers on the palate. The gills are not necessarily green.