As I understand it, for something to count as a single act of eating, it must meet two requirements. The amount ingested must be the minimum of Kezayit. Some hold this to literally be the volume of ...
This question is not about standards of kashrut -- which are of course a serious topic -- but rather the question of "grave sins" for which the death penalty is prescribed, or the consequence of ...
Are there any written recordings in any branch of Torah where we find a comment proving someone actually died from Kares/Ariri? Now, of course being a heavenly decree it would be hard to know for ...