Making wine wasn't necessarily complicated for Lin Mu, but when it came to Immortal wine, things became a bit complex.
When there was Immortal Qi involved, one couldn't just crush an immortal fruit and squeeze out its juice to be fermented. Doing that directly would only lead to the Immortal Qi leaking out and the wine turning into normal wine.
If one wanted to make Immortal wine, they needed special equipment fothe r it. This came in the form of various jars, barrels as well as gourds. Similar to the preservation formations on the pill boxes and bottles, wine making equipment also had them.
But in addition to that, they also had temperature regulation as well as several more formations that promoted the formation of wine.