Soak the cashew nuts in boiling water for 20 minutes. Drain well and transfer to a blender.
Add the defrosted strawberries, coconut cream, lemon juice, sugar, and vanilla essence and blend until completely smooth. You will want all of the crunch of the nuts gone before proceeding. You may need to start and stop a few times.
With the blender running add the xanthan gum and keep blending for another 30 seconds to make sure the gum is completely incorporated.
In a large bowl whip the aquafaba as you would egg whites until completely white and stiff. Add the blended strawberry mixture to the aquafaba and carefully mix it into the foam. Use a rubber spatula for this and gently turn it over and over until completely mixed. Be gentle.
Divide the mixture into four individual servings (or leave it in one big bowl) and refrigerate for at least 2 hours.
Before serving, decorate with chocolate shavings and fresh berries.