Here's a video explanation:
And here is the poster:
Now, some people might presume this either an outmoded or barbaric procedure.
Of course, barbecues are okay.
And the Samaritan ceremony is attended by hundreds of interested onlookers because that event is, well, folklorish.
Here are two pictures of what went on on Mount Gerizim over a century ago:
If you are a vegetarian, I guess your dislike is understandable.
But if not, just consider this as another practice for anthropological study.