Somebody put a glass down and didn’t use a coaster.

That’s the mark. A ring on a table, left behind after the bottle was finished, the argument settled, and everyone went home.

It’s one of the least reverent things wine produces — and perhaps the most honest. Proof that something happened here.

We called it OINOS.

A place to learn wine properly. Three volumes of lessons, maps and tasting practice, built for people who want to understand what’s in the glass rather than simply nod at it.

Wine is better when you know what you’re drinking.