In the past, I have found the NV Reliquia Oloroso almost painful. There's a new saca or bottling now, presented in November 2020 and now released every year in half bottles with hand-painted (modern) labels. This has an explosion of aromas of low tide, rusty nail, iodine and seaweed, with brutal concentration and acidity (volatile and all) and almost painful concentration with marked bitterness. They do not aim for finesse but for concentration, which is what the oxidative aging was. As Robert Parker would say, it's a wine for masochists. :-) There are 80 half bottles released every year.