Melt 30g of chocolate "au bain-marie with" 1 tablespoon of coconut oil.
Take a glass in which you want to pour your shake.
With a spoonful of melted chocolate, go along the edges of your glass and let it 'drip' down. This way you create a nice effect.
Place in the fridge for at least half an hour so it can harden.
Take your blender and put in 300ml of almond milk along with 2 large tablespoons of peanut butter, 1 tablespoon of erythritol, 50ml of cream, 1 teaspoon of cocoa powder and 2 handfuls of crushed ice.
Blend until al is well mixed. Taste and add some ingredients to taste.
Divide your shake between the two glasses. Finish with cocoa powder, blueberries and more chocolate ;-)