Hangover cure (I never needed it, but Papa gave it to sibling), a slice of deli/cold cut ham/gammon and a small glass of flat beer. I guess it worked as sibling would feel better.
I did suffer once early 2000s but it was right after drinking brown coloured rum. To the loo I went Speedy Gonzales style and my guts came out. Suffered a three days migraine afterwards. Toss the offending liquid into the sink and recycled the bottle.
Haven't touched it since. Also Papa always pointed out that to stay away from hangovers was to never mix spirits. Example, you began drinking clear spirits, such as vodka, then you stuck to that. And above all else drink in moderation!