A plate of jellied gree-worms
A razor-toothed gree-worm is a type of worm familiar to the Ferengi culture. Gree-worms were commonly eaten alive as a delicacy, but could also be served jellied. (DS9: "Ferengi Love Songs")
Ferengi Rule of Acquisition #203 stated that "new customers are like razor-toothed gree worms. They can be succulent, but sometimes they bite back." (DS9: "Little Green Men")