PREP Wax paper-line bottoms 2-8x1-1/2" round cake pans; grease/flour-dust pans.
PREP Combine 2 c toasted nuts, 2 tbl flour, 2 1/2 tea b/powder.
BATTER Blender/combine 4 eggs, 3/4 cups sugar; then cover/blend smooth. Add prepared nut mixture. Cover/blend smooth. Spread evenly in pans. Bake 350 deg 20-25 min (spring back when lightly touched---centers may dip slightly). Cool on wire racks 10 min. Liftout layers to cool on racks.
FINAL Spread cooled layers w/ Mocha Frosting; stack layers; frost top and sides. Apply chopped nuts to sides. Loosely cover; chill frosted cake 2-24 hours.
SERVE topped w/ chocolate curls garnish.
FROSTING In chilled small bowl dissolve tsp instant coffee crystals in cup h/cream; add 1/3 cup sugar, 1/4 cup cocoa powder, 1/2 tsp vanilla. Elec/mixer on medium just til stiff peaks form (tips stand straight).