Preheat oven to 350F.
Line a standard 12 cup cupcake pan with liners.
In a bowl, whisk together the flour, baking soda, cocoa powder and salt.
In another bowl, beat the sugars and butter using an electric mixer. You want them to be light and fluffy, which should take approximately 3 minutes if the mixer is on medium-high speed.
Add in eggs, milk, coffee flavoring, and vanilla until combined.
Add in flour mixture and stir to mix well.
Fill prepared cupcake cups.
Add desired amount of Ghirardelli Chocolate into cupcake mix while in the cupcake pan, and stir with end of spoon as well as spread lightly over top of cupcake. This will give you a fudge-like swirl in the cupcake.
Bake at 350 degrees for 20 or so minutes or until you can insert a toothpick and it comes out clean.