Homemade Ice Cream

Heat the milk and heavy cream—if it boils, you're in trouble.
Add sugar to egg yolks and shake them up.
Pour the heated milk in and mix, then pour the mixture into a pan and heat it. As soon as it thickens (before the yolks cook through), turn off the heat immediately.
Let it cool down, then freeze it in an ice cream maker.
If the yolks cook, it'll turn into steamed eggs.
It's good to add something like vanilla extract.