Preheat oven to 325° F.
Cream the butter (or margarine) and sugar in a large bowl. Beat in 1 yolk at a time and mix until the batter is light and fluffy. Add the grated chocolate, matzah meal, almonds and salt.
In another bowl, beat the egg whites until they are stiff but not dry. Fold the egg whites into the chocolate mixture.
Spoon the batter into an ungreased 9" springform pan.
Bake for 50-60 minutes, or until you insert a toothpick into the cake and it comes out clean. Cool in the pan set on a cooling rack. At this point, you can remove the torte from the pan and proceed or chill it as detailed in the below Recipe Notes.
If necessary, take a thin slice off of the top of the torte to make it flat. Slice the torte horizontally through the middle. Place the jam or preserves between the layers.