Nice, I'm at 75/102 apparently. Some of these I haven't heard of.
Cool! 27 here! And I thought of myself as a connoisseur!
Does this maintain state if navigate away ?
Yes, the site seems to save the checked cocktails into Local Storage (you can click some, and in your browser's inspection tools you can check. Eg. in Firefox > Inspect > Storage > Local Storage, there's a key with "cocktail-tracker").
I've checked and closing/reopening works (of course locally only, no incognito tabs, etc...)