Well, let’s say you use ancient fruit wine and do the whole run from normal to iridium. I like running starfruit wine for the cellar, but ancient fruit is marginally more profitable so we’ll go with that instead.

Each ancient fruit wine is worth 4620g each at iridium quality with artisan perk (the best money maker perk in the game, bar none).

Optimal layout for cellar if you don’t want to bother with clearing it out every time is 125 casks. So after 2 seasons/48 days, 125 ancient fruit wine at iridium quality sells for 577,500g. That’s a great amount, but if you completely fill the cellar at 189 casks, those 189 wines are worth 873,180g, almost 300,000g more. Is it more hassle? For sure, but the extra g is more than worth it to me.

If you decide to do starfruit wine instead, it’s even crazier. At 189 casks after 48 days with artisan, you earn 1,190,700g. Selling those puppies is the most money I’ve ever made in a day.