One year, my SIL gave me a wine-making kit for Christmas. I followed the instructions precisely and scientifically, bottled it up, and drank it.
That stuff was like a dry Port - or harder. Gave me the only real ‘hangover’ that I’ve ever had.
I gave up on making it, and buy my wine - though I’d always rather have a Guinness :-)
We use a yeast that has a ‘die-off’ point when the alcohol reaches 15%. Store-bought wine is usually around 10%. Yes, you have to be VERY careful drinking our wine!