I understand that portions of the Passover Seder are remnants of the Temple procedure; that elaborations are Talmudic; and that IIRC, somewhere it is written that “customs” of one locality under some set of conditions have the force of liturgical requirements (I don’t what status of requirements–there are many).
Given that, my question is this: at the mention of the 3 acronyms of the ten plagues, and the recital of all ten, I always followed my father’s tradition of dipping a pinkie in the wine glass and placing a drop on the plate. He didn’t know why, he just did it because he saw his father do it.
Now I lead the Seder, and at each drop of wine–I don’t know if I heard this or read this–I explain to everyone at the table that we do this to symbolize the suffering and death of the Egyptians: that we should not rejoice at the death of others, but that the suffering of the Egyptians could have been forestalled before each plague (essentially the Biblical view) if only Pharaoh had let the people go, etc.
Do others do this? And if so, what is the source of the custom/liturgy?