“We break the Yom Kippur Fast with a shot of whiskey and then fleishiges.”
I think that eating a fleishiks meal on Motzei Shabbos may be more than a “family tradition”. I’m not sure about this, since I never looked it up, but it may be something that really everyone one is supposed to do l’chatchila, since it’s supposed to be a real seudah. However, many people are not aware of this (if it is correct),
As for the whiskey – I think have a vague memory of my mother doing that one year and saying it was her family’s minhag, although I have never heard of anyone else doing that.
And it was the first and last time, I ever tried “shnapps”. I have a pretty bad memory of the taste.