Pass the sesame cream into another saucepan, through a sieve. Push the seeds down with a spoon to release as much liquid as possible.
Add the tahini, glucose & milk powder into the cream, whisk to combine then place over a low heat.
In the meantime, combine the egg yolks & remaining sugar in a large mixing bowl.
When the milk is steaming (don't let it boil!), pour a third into the yolks, whisking as you do so.This is called tempering the yolks. Pour the now tempered yolks back into the saucepan then cook over a low heat until the custard reaches 82°c, making sure to stir constantly with a rubber spatula.
Remove from the heat then give the custard a quick blitz with a stick blender.
Pass into a bowl, through a sieve & leave to cool, stirring occasionally.
Once cool, place a piece of baking paper onto the custard's surface & refrigerate overnight.