Put the whole milk and double cream into a medium sized saucepan, warm it on a low heat until it is steaming, but do not let it boil. You can stir it occasionally
Meanwhile, place the egg yolks, vanilla extract, caster sugar and cornflour into a mixing bowl and whisk them together
Once the milk mixture is ready, you can transfer it to a jug or pour directly from the saucepan, pour it into the egg mixture slowly, whisking constantly as you pour
Pour the mixture back into the saucepan and put it on a medium-high heat. Heat it until it thickens, stirring it constantly (I recommend using a silicone spatula so you can scrape the bottom as you stir) It takes 5-10 minutes to thicken for me, but all hobs are different
You can serve it immediately, or place into a bowl or container, and put cling film over it so the cling film directly touches the top of the custard. Put in the fridge, it will keep for 3-4 days. Reheat gently in a saucepan, stirring constantly
Notes
I recommend using whole milk and double cream for the creamiest and tastiest custard.
You can use either vanilla extract or a vanilla pod for this recipe. If using extract, use a good quality one for the best flavour, and avoid using a vanilla essence.
Make sure your egg yolks are at room temperature before you make the custard.
I recommend caster sugar for this recipe, but granulated sugar will work too.
Although I provide cup measurements, I highly recommend weighing your ingredients out using digital kitchen scales. It is the most accurate way to measure ingredients and will ensure the best results. Digital scales are very low cost and can be purchased for around £12 ($16.50) .
For teaspoon (tsp) and tablespoon (tbsp) measurements, please use measuring spoons and not the type of spoons you eat with. Again this will ensure accuracy and provide the best results.