Bisato in speo is a traditional dish from Grado, featuring eel (bisato) that is skewered and grilled, a technique known as "in speo" in local dialect. It has been a staple for centuries in the area of Marano Lagoon. The eel is typically marinated in a mix of vinegar, garlic, rosemary, and bay leaves, giving it a fragrant and slightly tangy flavor.
After marinating, the eel is skewered and slowly cooked over an open flame or hot coals, which adds a smoky element to its rich, oily flesh. The slow cooking process helps to make the meat tender and flavorful, while the marinade highlights the natural taste of the eel.