Poached Fish with Walnut Sauce or Almond Sauce

In the Sephardic community, carp was considered the special holiday fish, especially for Rosh Hashanah, as it represented good luck and longevity. In Salonika, the carp, or sazan, came from a lake the Sephardim called Goyvasidi, a Ladino corruption of Agios Vasilios (Saint Basil), the Greek name for the lake. While the fish could be served very simply, with just the court bouillon reduced to a shimmering jelly or thickened with the egg-and-lemon agristada, it also was sometime