In a small, microwavable bowl, add the chocolate chips.
Heat the 40ml of water in the microwave until very hot but not boiling.
Stir the 1/4 tsp espresso into the water then pour that over your chocolate chips.
Stir with a spoon until the chocolate chips are melted and everything is smooth (you may need to pop this back in the microwave for a second just to get everything fully melted). Let this mixture cool a bit while you follow the rest of the steps.
In a large, chilled bowl, whip the cream until it starts to thicken slightly.
Add the powdered monkfruit/erythritol sweetener and vanilla extract and whip again until stiff peaks can be formed. Reserve about 4 tbsp whipped cream for topping (Optional).
In another small bowl, heat up the 2 tbsp heavy cream in the microwave until hot.
Stir in the gelatin until it dissolves.
Then add this mixture along with the espresso/chocolate mixture from earlier to the whipped cream and immediately whip well until smooth and combined.
Spoon the mixture neatly into serving glasses and chill for at least an hour.
Top with the reserved whipped cream, shaved dark chocolate and a cherry or another piece of low carb fruit if you wish. Enjoy your Keto Chocolate Espresso Mousse!