Step 1: 1. Whisk 30g skimmed milk powder in to 80ml cold milk.
Step 2: 2. Warm the milk mix (Do not let it boil), whisk in 30g cocoa powder and let it cool.
Step 3: 3. Mix in 7g sweetener, 1/4 vanilla and chocolate essence and put to one side.
Step 4: 4. Make up the 5g gelatine according to pack instructions and stir it in to the chocolate and milk mixture. Leave in a cool place until the mixture thickens but do not let it set.
Step 5: 5. Pour the egg white into a large bowl and whisk until firm. Fold into the chocolate mixture a spoonful at a time.
Step 6: 6. Leave to set in the fridge before serving.