Preheat the oven to 350ºF/177ºC and line one baking sheet with parchment or a silicone baking mat.
Mix the dry ingredients in a bowl.
Stir in the eggs, extracts and oil until combined, then fold in the almonds.
Divide the dough in two and form two logs on the baking sheet that are roughly 11 x 3", give or take.
Pop the tray in the oven and bake for 35 minutes, or until pale brown.
Remove from the oven and allow to cool for 15 minutes before slicing the logs on the diagonal in 1/2" pieces.
While the biscotti are cooling, turn the oven temperature down to 300ºF/148ºC
Arrange the biscotti on the cookie sheet, cut side down, and return to the oven for 30 minutes or until golden, flipping the cookies halfway through.
Allow the biscotti to cool completely on a cooling rack, then melt the chocolate over a bain-marie and drizzle it over the biscotti with a spoon or paper cone.
Let the chocolate set and harden before storing in an airtight container.