This video tells us the method to decorate an angel food cake with cranberry garnish. Cut the cake into half horizontally by using a serrated knife. Remove the upper portion of the cake. Mix together half cup of raspberry jam and two teaspoons of orange peel. This mixture is spooned over the top of the lower portion of the cake. Put the top of the cake back on the lower portion. Take 8 ounce of whip topping and apply it to the outer portion of the cake. Now, take frozen cranberries and thaw them. If you are using fresh cranberries, dust them with some water. Put the cranberries in sugar and roll them around in it. Put these on the cake and decorate it with some mint leaves. This finishes your task.