Sol found this kind of wine extremely beneficial for his cultivation.
In the Mortal Realm, he would have been able to open his acupoints a bit faster if he had used medicinal pills along with his already fast cultivation speed. However, on his cultivation path, Sol decided he wouldn't use any outside help to boost his cultivation speed and instead keep his body pure.
He had already reaped benefits from this decision when he refined his body for a second time. If he had used pills to open his acupoints then, he wouldn't have been able to refine his body a second time so quickly due to the impure toxins the pills would have left inside his body.
However, Sol ultimately still wanted to increase his cultivation speed, as the amount of Aether Energy needed to make a breakthrough from the Earth Expanse Realm to the Sky Expanse Realm was absurdly high. His Innate Dharma had reached a bottleneck in evolving so he had to think of another way. Thus, he created this wine!