Here's a creative way to get notice for your fast food chain: design a billboard out of an ingredient your restaurant uses. The Burger King billboard, located in Istanbul, was designed by Young & Rubicam and boasts 2,548 packets of hot sauce.
Filled hot sauce packets are used to depict a man's face -- his mouth is wide open, presumably because he just sampled the hot sauce. Empty packets make up the background.
We're gonna assume that the hot sauce doesn't go bad quickly after opening. Otherwise, that's going to turn into one ugly-looking open-mouthed cartoon.
Young & Rubicam