'Raw' Raspberry Chocolate Ganache Fudge Cake

I'm doing a 'no added sugar' challenge for 5 days.  This recipe does call for agave or honey or maple syrup in the frosting, but maybe some raspberries and water would do the trick?

http://www.youtube.com/watch?v=d4rgk3gQowk

3 cups dried walnuts (is there a difference between 'dried' and what you buy in the baking aisle?)
2/3 cup cacao (or cocoa, from what research I've done so far)
1/4 tsp. salt



LOVE the secret ingredient, although I've never put into anything sweet.