Prepare the Custard Mixture: In a mixing bowl, whisk together the eggs and sugar until the mixture becomes smooth and pale. Gradually add the milk (or cream), vanilla extract, and a pinch of salt. Whisk everything together until fully combined and smooth.
Fill the Ninja Creami Pint: Pour the custard mixture into the Ninja Creami pint, making sure not to overfill it. Leave some space at the top to allow for blending.
Blend the Custard: Attach the pint to the Ninja Creami base and select the "Custard" setting. Allow the machine to blend the custard until it reaches a smooth, creamy consistency.
Serve and Enjoy: Once the custard is ready, give it a quick stir to ensure it’s evenly blended. Serve immediately with your choice of toppings or store it in the fridge for later.