Les Monts Damnés Sancerre Sauvignon Blanc

I know that this should be aged some time but had my brother in law visiting and he is a SB fan. Pulled this out of the cellar for him. Typical SB profile, balanced and a nice round creamy moutfeel. But other than that: I didn't taste the difference between this and a 15€ supermarket sauvignon blanc. Supposedly this is the top of Sancerre.... Maybe complexity will develop in a couple of years time but for now underwhelmed 🫣