Why Do Sandwich Pickles Have Ridges? - Chowhound

Another theory is that the crinkles in sandwich pickles create a nice crunch that adds depth to your sandwich texture. The other components of a sandwich, like bread, meat, and cheese, generally have a softer texture, so a ridged pickle provides a welcome juxtaposition. Advertisement Structurally, the ridges also help the pickle maintain its shape by providing strength and extra surface area. This design helps…