White gravy is a classic sauce made from a roux (equal parts fat and flour) and milk. It is a versatile sauce that can be used on a variety of dishes, such as chicken, biscuits, and mashed potatoes. White gravy is also relatively easy to make, and only requires a few simple ingredients.
The history of white gravy is unclear, but it is thought to have originated in France. The first known recipe for white gravy appeared in a French cookbook in the 17th century. White gravy quickly became popular in other parts of Europe, and was eventually brought to America by European settlers.