-
Place the gelatin sheets in a bowl with cold water for 10 minutes.
Put cream, powdered sugar, vanilla, and lemon in a bowl and whip to a light whipped cream.
Wring the water out of the gelatin sheets and melt them in a bowl over a water bath.
Once melted, remove from the heat and add a small amount of the whipped cream to the melted gelatin, stirring it well together.
Now add the whipped cream with gelatin to the rest of the whipped cream and fold together gently.
Pour the lemon mousse into a piping bag and pipe the mousse into the desired shape.

Freeze the mousse for at least overnight.