Place the milk,, 60g of the sugar, glucose, milk powder, salt & vanilla into a large saucepan.If your using a vanilla pod, scrape out the seeds & add both the pod & seeds to the pan. Whisk to combine then place the saucepan over a low heat & leave to warm gently until steaming but don’t let it boil. Make sure to stir the milk regularly with a spatula.
Whilst the cream is heating up, place the yolks & remaining sugar into a large mixing bowl then whisk to combine.
Once the milk is steaming hot, pour half of it into the yolks, whisking as you do so. Pour the now tempered yolks into the pan of milk.
Cook the custard over a low heat, stirring constantly with a rubber spatula until it is thick enough to coat the back of a spoon & has reached a temperature of 82°c/180°f.
Once cooked, take the custard off the heat & stir in the double cream. If you've used a vanilla pod, take this out of the custard at this point. Give the custard a quick blitz with a stick blender then pass into a container, through a sieve.
Let the custard cool, stirring occasionally then place a piece of baking paper onto the custard’s surface & refrigerate overnight.
The next day, churn the custard until it reaches the consistency of soft serve. If you take the temperature of the ice cream with a food probe, it should be around -5°c/23°f.
Once churned, transfer to a tub & leave to set in the freezer for a minimum of 4 hours before serving.