Sparkling Wine costs 300g flat (before Artisan). Add the base price of potato (80g), and it becomes profittable only for the cheapest wines (Fruit price < 74g, only 5 basegame fruits fit this). Even then, add the processing time and it really does not look worth it.
The best solution would be making the price of sparkling wine scale depending on the wine you put in, but if that's impossible, simply increasing the price would help.
Sparkling Wine made using Rhubarb Wine
Sparkling Wine made using Strawberry Wine
Sparkling Wine costs 300g flat (before Artisan). Add the base price of potato (80g), and it becomes profittable only for the cheapest wines (Fruit price < 74g, only 5 basegame fruits fit this). Even then, add the processing time and it really does not look worth it.