Wash and clean the strawberries from the leaves and stalks and then cut them into smaller pieces to make them easier to mix.
Put the strawberry pieces in a mixing bowl, taking care to keep about two or three to decorate at the end and pour the sugar over them.
Start beating the strawberries and the sugar whith the electric mixer until we notice that the strawberries are crushed a little, for about 30 seconds.
Add the egg whites and continue to mix at medium to high speed for about 2-3 minutes, you will see that you will get a light but quite firm foam. You should know that it is ready when you get a foam that retains its shape.
Put the bowl in the fridge for 30 minutes because the foam is better and more comfortable if consumed cold, after which you can decorate and serve it.
You can make this mousse recipe from fresh fruits when it’s their season like strawberries, raspberries and blackberries.