The stabiliser tablet in the wine making kit does contain sulphites. It acts to stop the wine spoiling when bottled, as otherwise it would need to be kept refrigerated until you are ready to drink it. Unless you have a specific reason to avoid using the stabiliser tablet, we would recommend always adding it. The articles below go into this issue in much more detail.
https://blog.homebrewing.org/making-wine-without-sulfites/
https://winemakermag.com/wine-wizard/133-can-i-make-a-sulfite-free-wine
If you have any more questions or want to get in touch, please don’t hesitate to contact us.
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