Preheat oven to 350. Melt chocolate in a double boiler and then set aside to cool.
Creme room temperature butter until light and fluffy.
Add the sugar and beat until light and fluffy.
Add the eggs one at a time until well blended.
Mix in the chocolate, cardamon and orange zest, just until combined.
Pour into a lightly buttered 8" pan, I like to use a tart pan to give it a bit of an elegant look.
Bake for 25 - 30 minutes, until set, it will not jiggle at all.
Let cool for about 10 minutes before removing from pan.
I like to serve a sliver of the cake with fresh berries and either sour cream or creme fraiche that has been sweetened with brown sugar. Serve. Eat