In a medium saucepan, stir together the remaining 1 cup sugar, the water, hazelnut syrup, orange peel, and orange juice. Bring to boiling; reduce heat. Simmer, uncovered, about 15 minutes or until reduced to 1 cup. Pour the syrup evenly over slightly cooled baklava in the pan. Cool completely. Before serving, sprinkle with additional cocoa powder. Makes 24 to 48 cookies.