Mocha Semifreddo

1 . Stage

Whisk eggs, sugar, coffee-flavored liqueur, instant coffee, and 1 teaspoon cocoa powder together in a metal bowl.

2 . Stage

Place bowl over low heat on the stove (holding bowl with a dishtowel) and continue whisking until mixture thickens, 4 to 6 minutes. Whisk continually to prevent eggs from scrambling. Remove bowl from heat and let mixture cool completely. (You can set the bowl on ice water to speed this up.)

3 . Stage

Whisk ice-cold heavy cream and sugar together in a chilled bowl until stiff peaks form, 3 to 4 minutes. Add cooled egg-coffee mixture to the whipped cream. Stir with a spatula until just combined.

4 . Stage

Transfer mixture to serving cups. Wrap cups in plastic wrap and freeze until firm, 8 hours or overnight. Garnish with whipped cream and a dusting of cocoa powder.