Beat butter with sugar until fluffy.
Mix in one egg at a time along with extracts.
In large bowl combine, flour, baking powder, salt, dry buttermilk and cocoa.
Add in dry ingredients one cup at a time until all incorporated.
Stir in chocolate chips.
Knead dough and separate into two logs.
Bake at 350 preheated oven for 35 minutes or until bottoms are firm and lightly golden.
Remove from oven and when cool to touch, slice with a serrated knife and lay pieces on their sides on baking sheet.
Bake slices for 10 to 15 minutes.
Cool Biscotti on cooling rack
Mix up icing
Mix powdered sugar with corn syrup, water and extract of choice.
Place icing into piping bag and pipe onto biscotti and let dry before stacking.
