The gumbo z’herbes is a unique gumbo that was supposedly developed to satisfy a superstition that if one ate seven greens on Holy Thursday and met seven people on Good Friday, you would have good luck all year. One of the more famous gumbo z'herbes is served by Leah Chase at her restaurant, Dooky Chase, in New Orleans. Her recipe includes nine different greens: mustard, collard, turnips, watercress, beet tops, carrot tops, lettuce, cabbage. and spinach. She serves this to crowds of people every Holy Thursday.