Buttermilk Chess Pie

Despite my errors, this pie was very delicious. In honor of Pi day, I wanted a mathematical pie, and was pleased to think of Chess Pie. This is an old American recipe - prepared with buttermilk, an acid (here lemon juice but other chess pie recipes use vinegar), butter, sugar, and flavoring (lemon zest and nutmeg).

I am embarrassed to admit that I used a store-bought crust (I'm very busy with work). I blind-baked it, and then brushed egg white over it. This worked beautifully and should have protected the crust from getting soggy.

In preparing the custard I forgot to add the cornstarch. This resulted in a custard that tended to separate and weep liquid. The pie crust ended up soggy, but my DH and kids still loved it.