Passover Chocolate Nut Cake

Ingredients

• 1 c. each: pecans, hazel nuts, almonds and walnuts
• 7 oz. fine quality bittersweet (not unsweetened) chocolate
• 3/4 c. sugar
• 8 large eggs, separated
• 1 tsp. freshly grated lemon zest
• 1 Tbsp. freshly grated orange zest
• 12 navel oranges, peeled and pith cut away and sections cut free from membrane
• 1/2 c. honey
• 1 1/2 c. nonfat milk
• 1/2 c. sugar
• 1 egg
• 3 egg whites
• 2 tsp. vanilla extract
• 1/4 tsp. salt or to taste
• 3/4 c. unbleached all-purpose flour
• 1 lb. frozen pitted cherries, thawed and drained (about 1 1/2 c.)
• 1 lb. frozen strawberries, thawed and drained (1 1/2 c.)
• 2 Tbsp. powdered sugar
• powdered sugar (optional garnish)