Chocolate Lover’s Cheesecake

For the crust:

finely ground chocolate cookie crumbs*

sugar

unsalted butter, melted

For the cheesecake: 

sour cream

vanilla extract

espresso powder or instant coffee granules

bittersweet chocolate, finely chopped

cream cheese, at room temperature

unsweetened cocoa powder, sifted

tsp. salt

sugar

large eggs, at room temperature

For the glaze: 

bittersweet chocolate, finely chopped

heavy cream

unsalted butter, at room temperature

*Most recipes call for Nabisco Famous Chocolate Wafers but I can never find them.   I generally use Oreos and scrape off the cream filling.