baked baked-food bretzel brezel common crisp crispy crunch crunchy crystals distinctive european food form forms glazed hard hard-varieties iconic looped looped-pretzel loops popular pretzel pretzels salt-crystals savory savoury seasoned seasoning shape shaped shapes Sizes snack snack-food snacks symmetrical symmetrical-looped-form symmetrical-loops twisted unique knot-like shape varieties abstract adornment angles appearance architectural architectural adornment building crafted craftsmanship cultural culture decorated decoration decorative design Designs detailed detailed patterns display heritage historic historical islamic light lines Motifs ornament ornamental ornamentation pattern perspectives style surface surfaces symbolic symmetry textures wall wall decoration