What is gumbo file?

Gumbo file is a spice made from finely ground sassafras leaves. It is a key ingredient in Creole cuisine and is commonly used in dishes such as gumbo, jambalaya, and étouffée. Gumbo file imparts a unique flavor and aroma to dishes and also acts as a thickener. It is typically added towards the end of the cooking process to prevent it from becoming too thick or slimy. Gumbo file is also used in Native American medicine for its antiseptic and diuretic properties.