Brew strong coffee and keep it hot.
Sprinkle unflavored gelatin over a small amount of cold water and let it bloom for 5 minutes.
Add the bloomed gelatin to the hot coffee and stir until completely dissolved.
Add sugar and vanilla extract, mixing well.
Pour the coffee mixture into serving cups or a shallow dish.
Refrigerate for 3–4 hours or until fully set.
Serve chilled with whipped cream and a light sprinkle of cocoa powder.