In my pie making adventures, I've tried quite a few recipes whose results were questionable (Shoofly Pie with blackstrap molasses; do not do this!) or which mysteriously morphed into something else. Such it was that I started with the notion of making chess pie and ended up with this Almond Custard Pie.
I'm not entirely sure how one thing led to another anymore, but this is a delicious almondy confection. I'm not entirely sure it counts as a pie, as the almond crust has the interesting habit of rising to the top of the pie instead of remaining on the bottom as crust.
On the whey - the first time I made this recipe, I had really thick whey from one of my cheese-making experiments.. It was a bit like soft yogurt. You can also use buttermilk, OR 1 cup of whey/milk with 1/2 cup of yogurt.
On the pie crust - 1 cup of almonds only makes enough to cover the bottom of the pie plate. I like limited crust, but if you want it to go up the sides as well, double the crust recipe.