It's egg mushed up with vinegar, I think, I'm not sure!
Isnt egg salad when you boil an egg, cut it up into slices and serve with a salad?
No, that'd be egg on salad. xD Egg salad is where you hard boil eggs, chop them up, mix them with mayonnaise (I guess regular mayonnaise xD), sometimes onion, Tabasco sauce, salt, pepper, etc and put it on a sandwich. Sounds kind of similar though.