I didn't search here, but just a general one. I grew up with and still have a box of tapioca in my pantry at all times! There is usually (and is there on my current box) a recipe for pie filling. I add a bit of nutmeg to my blueberry pie, some people a dash of almond extract.
Here's a Martha Stewart link on different thickeners.
https://www.marthastewart.com/154184...starch-tapioca