Step 1: Add all the ingredients (200 ml single cream, 300 ml whole milk, 1 medium egg, 30 g white caster sugar, ½ Teaspoon Vanilla Extract30 g corn flour or corn starch) to a large pan and place it over medium heat. Stir continuously as you gradually bring the custard mixture to a simmer.
Step 2: Continue stirring as the custard begins to thicken. Test for thickness by moving your finger across the back of a spoon or spatula. Once you have the required consistency, take the pan off the heat and serve.
Notes
Storage This will keep in the fridge for a couple of days. Cover with clingfilm as mentioned below.
Tips Place a sheet of clingfilm over the surface of the custard as it cools to help prevent skin from forming.
If you want thinner pouring custard, add more milk or less cornflour.
When cold and set, this thick custard is suitable for filling tarts and other pastries, as mentioned above.