25 chocolate espresso layer cake with Recipes

bottom layer, unsalted butter, cut into 6 pieces, plus extra for greasing pan, chopped fine bittersweet chocolate (ghirardelli bittersweet), instant espresso powder, vanilla extract, eggs , separated, table salt, light brown sugar, crumbled with fingers to remove lumps, middle layer, cocoa powder , preferably dutch-processed, water, chopped fine bittersweet chocolate (ghirardelli bittersweet), cold heavy cream, granulated sugar, table salt, top layer, powdered gelatin, water, white chocolate chips (guittard choc-au-lait), cold heavy cream, shaved chocolate or cocoa powder for serving, optional

egg yolks at room temperature 30 minutes, whole milk, pure vanilla extract, sugar, divided, all-purpose flour, salt, egg whites at room temperature 30 minutes, fine-quality 60%-cacao bittersweet chocolate, finely chopped, water, eggs, separated , at room temperature 30 minutes, salt, sugar, divided, unsweetened cocoa powder, hazelnuts (3 1/2 oz), egg whites at room temperature 30 minutes, salt, cream of tartar, sugar, water, sugar, instant-espresso powder

eggs, separated, granulated sugar, powdered sugar, all-purpose flour, cocoa powder, almond meal, salt, water, sugar, instant espresso, water, sugar, egg yolks, bittersweet chocolate, melted, heavy cream , whipped, chocolate ganache , recipe follows, cocoa powder

hazelnut flour, all-purpose flour, eggs, sugar , plus 1 3/4 lb, egg whites, frangelico and espresso simple syrup, recipe follows, espresso buttercream , recipe follows, chocolate frangelico ganache , recipe follows, hazelnuts, toasted and roughly chopped, for garnish, gilded hazelnuts , recipe follows