Bourbon biscuit

Cut into rectangles roughly the size of a bourbon biscuit and arrange these on the prepared baking trays.

The design has been said by some fans to resemble an eraser, or to this journalist, a futuristic bourbon biscuit.

Everyone knows appearances can be deceptive, but the newly renovated Théâtre de la Gaîté Lyrique in central Paris takes the Bourbon biscuit.