If just scrape slush off of the surface of the batch without thoroughly mixing, you will not regret taste right because 1 of the flavor is in the bottom. While there is a process for Kosher wine, it's not so specific that there are only one, "recipe". https://Fenderkarate6.bloggersdelight.dk/2024/06/10/strategies-for-removing-wine-stains-that-you-may-use/