Straight-Up Rhubarb Pie Recipe

This sweet-tart rhubarb pie contains no distractions, like strawberries. The crust is made with shortening. (Butter is fine if you want a French tart, but it's not American pie unless it's made with shortening, the author Anne Dimock said.) The top is marked with 8 razor-thin vents. The pie can be fully assembled and frozen for up to 3 months before baking.