I have not but atleast around here they used dried fish skin to clarify the coffee. Maybe becouse chickens were rare here back in the day so you would not use them in coffee.

But I have seen "Klarskinn" (fish skinn used to clarify coffee) and I think I have a recepie on how to do them and make coffee with them i my great grandmothers old cookbook

That does not sound good

Neither one of those sound good! Part of me wants to try it to see if it would work. But, the other part of me doesn't even want to taste coffee made with egg in it! LOL

#3 You don't taste the fishskin. But since they used the coffee ground twice around here I imagine it wasn't as tasty as Budhas coffee

How bizarre! Sometimes eggs can be in things and you won't taste them, maybe that is the case with coffee as well? We use it to glaze sausage rolls, but you would never know from the taste.

#5 like wine and sodas often have eggs or fish gelatin (modern version of fishskin) in it to clarify it

#6 Yeah exactly that!