This makes a large serving of custard for one person, or three ½ cup mason jars for smaller servings {that's what I did}. You can easily double or triple the recipe for a larger custard.
Blended persimmons firm up pretty quickly into a gel, so you have to pour the mixture out pretty much as soon as you're done blending. If you leave it to sit, it'll firm up somewhat -- if that happens to you, just re-blend the mixture and pour right away.
You can also add more non-dairy milk if you prefer a less firm version. Or more softened/liquified coconut oil for a firmer version.
You can't really mess this up too much, as the recipe really relies on the flavor and texture of the delicious ripe persimmon. So no matter how you adjust the recipe, you'll probably end up with something tasty either way!
Persimmons also make wonderful thick smoothies, so if you prefer to give that a try, just add more non-dairy milk, and perhaps a tiny touch more sweetener to your liking. This makes a really filling and delicious breakfast smoothie!