I somewhat understand why many have the custom to dip things in the first place during the Pesach Seder. But, I'm curious about the source and reason for these two specific items, namely:
Why specifically use salt water and charoset? I understand the symbolism of the salt water that they represent the tears from the hard labor. The charoset is supposed to represent the paste from the mortar? But why does the charoset need to be made with fruit and nuts? If one wanted to have a paste from food, he could make a paste from potato starch or ground meat, as well. WHy use these ingredients, specifically?
Also, why specifically dip the vegetable in the salt water and the maror in charoset? Why not reverse?