Sandwich architecture is important. Before creating one, I try to visualize potential structural problems. Doing this ahead of time helps me decide how to slice ingredients, and how to assemble them all in the end. In this sandwich, the beet slices are my problem. They are all different sizes, they are slippery, and they also stain everything. That’s why I sliced the zucchini in long ovals. A layer of overlapping ovals will be the strength of the sandwich, the trick I need to containing the beet chaos. The sticky baba ganoush helps a lot too.