My usual recipe:
2 cups dairy (cream, milk, mixture, etc)
2 eggs plus 2 yolks
Pinch of salt
1/2 cup sugar (the recipe calls for this, but I usually put less)
Heat dairy (potentially with vanilla pod, nutmeg, cinammon etc)
Combine eggs, yolks, salt, sugar
Slowly mix eggs etc into dairy, you don't want to shock them and cook them too quickly.
Bake in oven at 300F for approximately 30 minutes (depending on whether cream or milk) in a water bath
I always love it, although of course the key is the quality of the eggs and the dairy.