Vodka

[Casanova]

Half a litre is nothing tbh. It could be allergy. I mean potatoes and some fermentation products are a natural product so an allergy is possible... but after fermentation is it possible to have an allergy?

I'd go for the throwing up in the night tbh. The less alcohol you drink, or if it's your first time you have no resistance and therefore you're pissed with an extremely small amount.

[partie2]

A girl in my town killed herself by drinking 0,5l of vodka, or so the police say.
"She drank it, went to bed and never woke up" is that in any way possible?

yep you can choke on your own vomit in your sleep.