Libamáj, or goose liver, is a delicacy in Budapest. It is often served as foie gras, a luxury food made from the liver of a fattened goose or duck. Foie gras has a rich and buttery flavor, and it is typically served as a spread on toast or as a topping for various dishes. It is considered a gourmet treat and can be found in upscale restaurants and specialty food shops in Budapest.