A cushaw is a type of pumpkin or gourd, and it makes an excellent replacement for pumpkin in pies.
Pumpkin can be used in this pie, but you just may find that cushaw is a uniquely tasty new replacement. Give it a try!
Stir together the mashed cushaw and cream; add beaten eggs. Mix well and add sugar, flour, salt, nutmeg, and allspice; mix well to blend. Blend in lemon extract and butter.
Pour mixture into the prepared unbaked pie shell and bake at 450 degrees F for 10 minutes.
Reduce heat to 350 degrees F and bake for about 40 minutes longer.